And regarding monitoring LDAP, is there a standard example for writing my own exporter?
On Thursday, July 28, 2022 at 8:25:46 AM UTC+8 nina guo wrote: > Sorry Brian. As we discussed LDAP monitoring in the thread, based on it to > raise a new question. > > I also want to compare the value of contextCSN, and I can obtain the value > with ldapsearch. Is there a way to send the value of contextCSN from each > ldap server to Prometheus, and compare them? > > On Tuesday, July 5, 2022 at 5:20:28 PM UTC+8 nina guo wrote: > >> Thank you Brian for your great help. >> >> On Tuesday, July 5, 2022 at 5:10:24 PM UTC+8 Brian Candler wrote: >> >>> > My blackbox is running as a pod in a k8s cluster. Do you have good >>> suggestion to store the cert file? >>> >>> A configMap is how I'd do it. >>> >>> On Tuesday, 5 July 2022 at 09:21:23 UTC+1 ninag...@gmail.com wrote: >>> >>>> Added as below: >>>> >>>> smtp_starttls: >>>> prober: tcp >>>> timeout: 20s >>>> tcp: >>>> tls_config: # add here? >>>> ca_file: "/certs/my_cert.crt" # add here? >>>> >>>> query_response: >>>> - expect: "^220 ([^ ]+) ESMTP" >>>> send: "EHLO prober\r" >>>> - expect: "^250-STARTTLS" >>>> - expect: "^250 .*$" >>>> send: "STARTTLS\r" >>>> - expect: "^220" >>>> starttls: true >>>> - send: "EHLO prober\r" >>>> - expect: "^250 .*$" >>>> send: "QUIT\r" >>>> >>>> My blackbox is running as a pod in a k8s cluster. Do you have good >>>> suggestion to store the cert file? >>>> On Tuesday, July 5, 2022 at 4:09:08 PM UTC+8 nina guo wrote: >>>> >>>>> Thank you very much. >>>>> >>>>> I changed to connect with DNS name. So according to the error msg, >>>>> following your kind suggestion, I need to go with [^2], am I right? >>>>> >>>>> ts=2022-07-05T07:32:17.495596017Z caller=main.go:130 >>>>> module=smtp_starttls target=mailserver:25 level=error msg="TLS Handshake >>>>> (client) failed" err="x509: certificate signed by unknown authority" >>>>> >>>>> On Tuesday, July 5, 2022 at 3:58:09 PM UTC+8 Brian Candler wrote: >>>>> >>>>>> Problem 1: timeout / regexp mismatch >>>>>> >>>>>> > ts=2022-07-05T02:29:41.609572861Z caller=main.go:130 >>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>> line="220 mail.com ESMTP" >>>>>> > ts=2022-07-05T02:29:46.607798497Z caller=main.go:130 >>>>>> module=smtp_starttls target=11.1.1.1:25 level=error msg="Error >>>>>> reading from connection" err="read tcp4 0.0.0.0:57074->1.1.1.1:25: >>>>>> i/o timeout" >>>>>> >>>>>> You asked it to match "^220 ([^ ]+) ESMTP (.+)$" which means: >>>>>> >>>>>> - "220" >>>>>> - <space> >>>>>> - 1 or more <non-space> >>>>>> - <space> >>>>>> - "ESMTP" >>>>>> - <space> >>>>>> - 1 or more <any-character> >>>>>> - end of line >>>>>> >>>>>> But in the banner you got back from the target host, there's nothing >>>>>> after the word "ESMTP": the line ends there immediately. Hence you were >>>>>> right to change the regexp. >>>>>> >>>>>> "I'm not sure if the change is acceptable from blackbox's view" - >>>>>> Blackbox will do whatever you ask it to do. If you want to match both >>>>>> cases (i.e. mail servers which do and don't put any text after "ESMTP"), >>>>>> then use a regexp which does that: >>>>>> >>>>>> "^220 ([^ ]+) ESMTP( .+)?$" >>>>>> >>>>>> or >>>>>> >>>>>> "^220 ([^ ]+) ESMTP.*$" >>>>>> >>>>>> or even just >>>>>> >>>>>> "^220 ([^ ]+) ESMTP" >>>>>> >>>>>> (no need to match all the way to the end of the line) >>>>>> >>>>>> Problem 2: TLS handshake failed >>>>>> >>>>>> * You asked Blackbox Exporter to connect to a host by IP address >>>>>> (1.1.1.1), instead of using a DNS name (smtp.example.com) >>>>>> * Therefore, Blackbox Exporter cannot verify the certificate unless >>>>>> the certificate itself contains an IP address >>>>>> >>>>>> It's the same as if you put https://1.1.1.1/ in your web browser. >>>>>> There's no way the browser can validate the certificate, unless the >>>>>> certificate itself contains IP address "1.1.1.1". And that is a very >>>>>> uncommon sort of certificate. >>>>>> >>>>>> Please, try *exactly* the command I gave you before: >>>>>> *curl -g >>>>>> 'localhost:9115/probe?module=smtp_starttls&target=aspmx.l.google.com:25&debug=true'* >>>>>> >>>>>> No changes. Copy-paste exactly that, with the hostname " >>>>>> aspmx.l.google.com" in it. You should find that it verifies >>>>>> correctly, as long as the ESMTP regexp matches OK. >>>>>> >>>>>> Then to get it to work with your own mail server, you will need to do >>>>>> exactly the same: >>>>>> * Refer to your mail server by its DNS name, not IP address, when >>>>>> asking blackbox_exporter to test it >>>>>> * The mail server must have a certificate which contains this name >>>>>> [^1] >>>>>> * The mail server's certificate must be signed by a certificate >>>>>> authority that blackbox_exporter trusts [^2] >>>>>> * The mail server's certificate must not have expired, i.e. the >>>>>> current time is within its notBefore and notAfter times >>>>>> >>>>>> [^1] If you still want to connect to the server by IP address but >>>>>> check for a different name in the certificate, then use the >>>>>> "server_name" >>>>>> setting in tls_config: see >>>>>> https://prometheus.io/docs/prometheus/latest/configuration/configuration/#tls_config >>>>>> >>>>>> [^2] If the certificate authority that signed your mail server's >>>>>> certificate is not in the system trust store then use the "ca_file" >>>>>> setting >>>>>> in tls_config: see >>>>>> https://github.com/prometheus/blackbox_exporter/blob/v0.21.1/example.yml#L53-L54 >>>>>> >>>>>> Or you can give up, and use "insecure_skip_verify: true" to disable >>>>>> certificate validation altogether: >>>>>> https://github.com/prometheus/blackbox_exporter/blob/v0.21.1/example.yml#L27-L28 >>>>>> (although then you lose valuable tests, because if your certificate >>>>>> was valid and becomes invalid you won't know. I also note that if you >>>>>> can't get blackbox_exporter to validate the certificate, then your >>>>>> clients >>>>>> probably won't be able to validate it either) >>>>>> >>>>>> At this point, it isn't really an issue with blackbox_exporter any >>>>>> more: it's a case of understanding how certificates and certificate >>>>>> validation work. >>>>>> >>>>>> On Tuesday, 5 July 2022 at 05:53:46 UTC+1 ninag...@gmail.com wrote: >>>>>> >>>>>>> I tried to change the first expect to ^220 ([^ ]+) ESMTP$. But I'm >>>>>>> not sure if the change is acceptable from blackbox's view. >>>>>>> >>>>>>> smtp_starttls: >>>>>>> prober: tcp >>>>>>> timeout: 20s >>>>>>> tcp: >>>>>>> query_response: >>>>>>> #- expect: "^220 ([^ ]+) ESMTP (.+)$" >>>>>>> - expect: "^220 ([^ ]+) ESMTP$" >>>>>>> >>>>>>> send: "EHLO prober\r" >>>>>>> - expect: "^250-STARTTLS" >>>>>>> - expect: "^250 .*$" >>>>>>> send: "STARTTLS\r" >>>>>>> - expect: "^220" >>>>>>> starttls: true >>>>>>> - send: "EHLO prober\r" >>>>>>> - expect: "^250 .*$" >>>>>>> send: "QUIT\r" >>>>>>> >>>>>>> >>>>>>> Curled and got the following error. Does it mean the mail server >>>>>>> doesn't contain any IP SANs? And on mail server certificate cannot be >>>>>>> validated? >>>>>>> ts=2022-07-05T04:18:10.539326118Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=error msg="TLS >>>>>>> Handshake (client) failed" err="x509: cannot validate certificate for >>>>>>> 1.1.1.1 because it doesn't contain any IP SANs" >>>>>>> >>>>>>> curl -g ' >>>>>>> http://0.0.0.0:9115/probe?module=smtp_starttls&target=1.1.1.1:25&debug=true >>>>>>> ' >>>>>>> Logs for the probe: >>>>>>> ts=2022-07-05T04:18:10.527958378Z caller=main.go:320 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Beginning >>>>>>> probe" probe=tcp timeout_seconds=20 >>>>>>> ts=2022-07-05T04:18:10.528040568Z caller=tcp.go:40 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Resolving >>>>>>> target address" ip_protocol=ip6 >>>>>>> ts=2022-07-05T04:18:10.528063021Z caller=tcp.go:40 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Resolving >>>>>>> target address" ip_protocol=ip4 >>>>>>> ts=2022-07-05T04:18:10.528076698Z caller=tcp.go:40 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Resolved >>>>>>> target address" ip=1.1.1.1 >>>>>>> ts=2022-07-05T04:18:10.528115109Z caller=tcp.go:121 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Dialing TCP >>>>>>> without TLS" >>>>>>> ts=2022-07-05T04:18:10.529223463Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Successfully >>>>>>> dialed" >>>>>>> ts=2022-07-05T04:18:10.529258037Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Processing >>>>>>> query response entry" entry_number=0 >>>>>>> ts=2022-07-05T04:18:10.530236839Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line="220 mail.com ESMTP" >>>>>>> ts=2022-07-05T04:18:10.530278493Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Regexp >>>>>>> matched" regexp="^220 ([^ ]+) ESMTP$" line="220 mail.com ESMTP" >>>>>>> ts=2022-07-05T04:18:10.53030557Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Sending >>>>>>> line" line="EHLO prober\r" >>>>>>> ts=2022-07-05T04:18:10.530348868Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Processing >>>>>>> query response entry" entry_number=1 >>>>>>> ts=2022-07-05T04:18:10.530919204Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-mail.com >>>>>>> ts=2022-07-05T04:18:10.530955761Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-PIPELINING >>>>>>> ts=2022-07-05T04:18:10.530971243Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line="250-SIZE 10240000" >>>>>>> ts=2022-07-05T04:18:10.530985701Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-ETRN >>>>>>> ts=2022-07-05T04:18:10.531006196Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-STARTTLS >>>>>>> ts=2022-07-05T04:18:10.531025088Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Regexp >>>>>>> matched" regexp=^250-STARTTLS line=250-STARTTLS >>>>>>> ts=2022-07-05T04:18:10.531045174Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Processing >>>>>>> query response entry" entry_number=2 >>>>>>> ts=2022-07-05T04:18:10.531064549Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line="250-AUTH PLAIN LOGIN" >>>>>>> ts=2022-07-05T04:18:10.531077325Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-ENHANCEDSTATUSCODES >>>>>>> ts=2022-07-05T04:18:10.531088466Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line=250-8BITMIME >>>>>>> ts=2022-07-05T04:18:10.53110099Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line="250 DSN" >>>>>>> ts=2022-07-05T04:18:10.531134286Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Regexp >>>>>>> matched" regexp="^250 .*$" line="250 DSN" >>>>>>> ts=2022-07-05T04:18:10.531186418Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Sending >>>>>>> line" line="STARTTLS\r" >>>>>>> ts=2022-07-05T04:18:10.531234743Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Processing >>>>>>> query response entry" entry_number=3 >>>>>>> ts=2022-07-05T04:18:10.531762621Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>> line="220 2.0.0 Ready to start TLS" >>>>>>> ts=2022-07-05T04:18:10.531779841Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Regexp >>>>>>> matched" regexp=^220 line="220 2.0.0 Ready to start TLS" >>>>>>> ts=2022-07-05T04:18:10.539326118Z caller=main.go:130 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=error msg="TLS >>>>>>> Handshake (client) failed" err="x509: cannot validate certificate for >>>>>>> 1.1.1.1 because it doesn't contain any IP SANs" >>>>>>> ts=2022-07-05T04:18:10.53937693Z caller=main.go:320 >>>>>>> module=smtp_starttls target=1.1.1.1:25 level=error msg="Probe >>>>>>> failed" duration_seconds=0.011375261 >>>>>>> >>>>>>> On Tuesday, July 5, 2022 at 12:03:50 PM UTC+8 nina guo wrote: >>>>>>> >>>>>>>> I may find the root cause - comparing the output between google's >>>>>>>> mail server and my mail server >>>>>>>> >>>>>>>> my mail server >>>>>>>> ts=2022-07-05T02:29:41.608566903Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info >>>>>>>> msg="Successfully dialed" >>>>>>>> ts=2022-07-05T02:29:41.608652361Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=1.1.1.1:25 level=info msg="Processing >>>>>>>> query response entry" entry_number=0 >>>>>>>> ts=2022-07-05T02:29:41.609572861Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=1.1.1.1:25 level=debug msg="Read line" >>>>>>>> line="220 mail.com ESMTP" >>>>>>>> ts=2022-07-05T02:29:46.607798497Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=11.1.1.1:25 level=error msg="Error >>>>>>>> reading from connection" err="read tcp4 0.0.0.0:57074->1.1.1.1:25: >>>>>>>> i/o timeout" >>>>>>>> >>>>>>>> google's mail server >>>>>>>> ts=2022-07-05T02:04:33.385587664Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>> msg="Successfully dialed" >>>>>>>> ts=2022-07-05T02:04:33.385613189Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>> msg="Processing query response entry" entry_number=0 >>>>>>>> ts=2022-07-05T02:04:33.419235886Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>> msg="Read line" line="220 mx.google.com ESMTP >>>>>>>> dn22-20020a17090794d600b006dfc3945326si6666807ejc.152 - gsmtp" >>>>>>>> ts=2022-07-05T02:04:33.419280493Z caller=main.go:130 >>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>> msg="Regexp matched" regexp="^220 ([^ ]+) ESMTP (.+)$" line="220 >>>>>>>> mx.google.com ESMTP >>>>>>>> dn22-20020a17090794d600b006dfc3945326si6666807ejc.152 - gsmtp" >>>>>>>> >>>>>>>> From the output it shows the regex is not matched for my mail >>>>>>>> server - ^220 ([^ ]+) ESMTP (.+)$ >>>>>>>> >>>>>>>> In config file >>>>>>>> smtp_starttls: >>>>>>>> prober: tcp >>>>>>>> timeout: 20s >>>>>>>> >>>>>>>> tcp: >>>>>>>> query_response: >>>>>>>> - expect: "^220 ([^ ]+) ESMTP (.+)$" >>>>>>>> send: "EHLO prober\r" >>>>>>>> - expect: "^250-STARTTLS" >>>>>>>> - expect: "^250 .*$" >>>>>>>> send: "STARTTLS\r" >>>>>>>> >>>>>>>> - expect: "^220" >>>>>>>> starttls: true >>>>>>>> - send: "EHLO prober\r" >>>>>>>> - expect: "^250 .*$" >>>>>>>> send: "QUIT\r" >>>>>>>> On Tuesday, July 5, 2022 at 11:40:06 AM UTC+8 nina guo wrote: >>>>>>>> >>>>>>>>> I searched this info blackbox_exporter for SMTP monitoring w/ >>>>>>>>> TCP module : PrometheusMonitoring (reddit.com) >>>>>>>>> <https://www.reddit.com/r/PrometheusMonitoring/comments/q60357/blackbox_exporter_for_smtp_monitoring_w_tcp_module/> >>>>>>>>> , >>>>>>>>> added "\r", but still got the same issue.. >>>>>>>>> >>>>>>>>> On Tuesday, July 5, 2022 at 11:26:49 AM UTC+8 nina guo wrote: >>>>>>>>> >>>>>>>>>> telnet got succeed. >>>>>>>>>> >>>>>>>>>> telnet 1.1.1.1 25 >>>>>>>>>> Trying 1.1.1.1... >>>>>>>>>> Connected to 1.1.1.1. >>>>>>>>>> Escape character is '^]'. >>>>>>>>>> 220 ... ESMTP >>>>>>>>> >>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Tuesday, July 5, 2022 at 11:11:48 AM UTC+8 nina guo wrote: >>>>>>>>>> >>>>>>>>>>> Probe failed due to TLS issue...it is not the same issue with my >>>>>>>>>>> mail server.. >>>>>>>>>>> There is no "i/o timeout" issue for google's mail server. >>>>>>>>>>> >>>>>>>>>>> curl -g ' >>>>>>>>>>> http://0.0.0.0:9115/probe?module=smtp_starttls&target=142.250.102.27:25&debug=true >>>>>>>>>>> >>>>>>>>>>> <http://100.100.3.9:9115/probe?module=smtp_starttls&target=142.250.102.27:25&debug=true> >>>>>>>>>>> ' >>>>>>>>>>> Logs for the probe: >>>>>>>>>>> ts=2022-07-05T02:04:33.373763474Z caller=main.go:320 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Beginning probe" probe=tcp timeout_seconds=5 >>>>>>>>>>> ts=2022-07-05T02:04:33.373850167Z caller=tcp.go:40 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Resolving target address" ip_protocol=ip6 >>>>>>>>>>> ts=2022-07-05T02:04:33.373867876Z caller=tcp.go:40 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Resolving target address" ip_protocol=ip4 >>>>>>>>>>> ts=2022-07-05T02:04:33.373882263Z caller=tcp.go:40 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Resolved target address" ip=142.250.102.27 >>>>>>>>>>> ts=2022-07-05T02:04:33.373903614Z caller=tcp.go:121 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Dialing TCP without TLS" >>>>>>>>>>> ts=2022-07-05T02:04:33.385587664Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Successfully dialed" >>>>>>>>>>> ts=2022-07-05T02:04:33.385613189Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Processing query response entry" entry_number=0 >>>>>>>>>>> ts=2022-07-05T02:04:33.419235886Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line="220 mx.google.com ESMTP >>>>>>>>>>> dn22-20020a17090794d600b006dfc3945326si6666807ejc.152 - gsmtp" >>>>>>>>>>> ts=2022-07-05T02:04:33.419280493Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Regexp matched" regexp="^220 ([^ ]+) ESMTP (.+)$" line="220 >>>>>>>>>>> mx.google.com ESMTP >>>>>>>>>>> dn22-20020a17090794d600b006dfc3945326si6666807ejc.152 - gsmtp" >>>>>>>>>>> ts=2022-07-05T02:04:33.419310506Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Sending line" line="EHLO prober" >>>>>>>>>>> ts=2022-07-05T02:04:33.419356415Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Processing query response entry" entry_number=1 >>>>>>>>>>> ts=2022-07-05T02:04:33.43519464Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line="250-mx.google.com at your service, >>>>>>>>>>> [130.214.226.41]" >>>>>>>>>>> ts=2022-07-05T02:04:33.435229899Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line="250-SIZE 157286400" >>>>>>>>>>> ts=2022-07-05T02:04:33.435242182Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line=250-8BITMIME >>>>>>>>>>> ts=2022-07-05T02:04:33.435254457Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line=250-STARTTLS >>>>>>>>>>> ts=2022-07-05T02:04:33.435270364Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Regexp matched" regexp=^250-STARTTLS line=250-STARTTLS >>>>>>>>>>> ts=2022-07-05T02:04:33.435285968Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Processing query response entry" entry_number=2 >>>>>>>>>>> ts=2022-07-05T02:04:33.435310813Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line=250-ENHANCEDSTATUSCODES >>>>>>>>>>> ts=2022-07-05T02:04:33.435323258Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line=250-PIPELINING >>>>>>>>>>> ts=2022-07-05T02:04:33.435337373Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line=250-CHUNKING >>>>>>>>>>> ts=2022-07-05T02:04:33.435373931Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line="250 SMTPUTF8" >>>>>>>>>>> ts=2022-07-05T02:04:33.435392537Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Regexp matched" regexp="^250 .*$" line="250 SMTPUTF8" >>>>>>>>>>> ts=2022-07-05T02:04:33.435409638Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Sending line" line=STARTTLS >>>>>>>>>>> ts=2022-07-05T02:04:33.435451742Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Processing query response entry" entry_number=3 >>>>>>>>>>> ts=2022-07-05T02:04:33.449015201Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=debug >>>>>>>>>>> msg="Read line" line="220 2.0.0 Ready to start TLS" >>>>>>>>>>> ts=2022-07-05T02:04:33.449039996Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=info >>>>>>>>>>> msg="Regexp matched" regexp=^220 line="220 2.0.0 Ready to start TLS" >>>>>>>>>>> ts=2022-07-05T02:04:33.476697731Z caller=main.go:130 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=error >>>>>>>>>>> msg="TLS Handshake (client) failed" err="x509: cannot validate >>>>>>>>>>> certificate >>>>>>>>>>> for 142.250.102.27 because it doesn't contain any IP SANs" >>>>>>>>>>> ts=2022-07-05T02:04:33.47676603Z caller=main.go:320 >>>>>>>>>>> module=smtp_starttls target=142.250.102.27:25 level=error >>>>>>>>>>> msg="Probe failed" duration_seconds=0.102953678 >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Metrics that would have been returned: >>>>>>>>>>> # HELP probe_dns_lookup_time_seconds Returns the time taken for >>>>>>>>>>> probe dns lookup in seconds >>>>>>>>>>> # TYPE probe_dns_lookup_time_seconds gauge >>>>>>>>>>> probe_dns_lookup_time_seconds 5.1452e-05 >>>>>>>>>>> >>>>>>>>>>> # HELP probe_duration_seconds Returns how long the probe took to >>>>>>>>>>> complete in seconds >>>>>>>>>>> # TYPE probe_duration_seconds gauge >>>>>>>>>>> probe_duration_seconds 0.102953678 >>>>>>>>>>> >>>>>>>>>>> # HELP probe_failed_due_to_regex Indicates if probe failed due >>>>>>>>>>> to regex >>>>>>>>>>> # TYPE probe_failed_due_to_regex gauge >>>>>>>>>>> probe_failed_due_to_regex 0 >>>>>>>>>>> # HELP probe_ip_addr_hash Specifies the hash of IP address. It's >>>>>>>>>>> useful to detect if the IP address changes. >>>>>>>>>>> # TYPE probe_ip_addr_hash gauge >>>>>>>>>>> probe_ip_addr_hash 9.60720384e+08 >>>>>>>>>>> # HELP probe_ip_protocol Specifies whether probe ip protocol is >>>>>>>>>>> IP4 or IP6 >>>>>>>>>>> # TYPE probe_ip_protocol gauge >>>>>>>>>>> probe_ip_protocol 4 >>>>>>>>>>> # HELP probe_success Displays whether or not the probe was a >>>>>>>>>>> success >>>>>>>>>>> # TYPE probe_success gauge >>>>>>>>>>> probe_success 0 >>>>>>>>>>> >>>>>>>>>>> Module configuration: >>>>>>>>>>> prober: tcp >>>>>>>>>>> timeout: 5s >>>>>>>>>>> http: >>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>> follow_redirects: true >>>>>>>>>>> tcp: >>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>> query_response: >>>>>>>>>>> - expect: ^220 ([^ ]+) ESMTP (.+)$ >>>>>>>>>>> send: EHLO prober >>>>>>>>>>> - expect: ^250-STARTTLS >>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>> send: STARTTLS >>>>>>>>>>> - expect: ^220 >>>>>>>>>>> starttls: true >>>>>>>>>>> - send: EHLO prober >>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>> send: QUIT >>>>>>>>>>> icmp: >>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>> dns: >>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Monday, July 4, 2022 at 8:44:49 PM UTC+8 Brian Candler wrote: >>>>>>>>>>> >>>>>>>>>>>> And if you try it with Google's mail server? >>>>>>>>>>>> *curl -g >>>>>>>>>>>> 'localhost:9115/probe?module=smtp_starttls&target=aspmx.l.google.com:25&debug=true'* >>>>>>>>>>>> >>>>>>>>>>>> On Monday, 4 July 2022 at 12:50:47 UTC+1 ninag...@gmail.com >>>>>>>>>>>> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> Still received the same error msg: >>>>>>>>>>>>> >>>>>>>>>>>>> curl -g ' >>>>>>>>>>>>> http://0.0.0.0:9115/probe?module=smtp_starttls&target=1.1.1.1:25&debug=true >>>>>>>>>>>>> ' >>>>>>>>>>>>> Logs for the probe: >>>>>>>>>>>>> ts=2022-07-04T11:47:59.071097704Z caller=main.go:320 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Beginning probe" >>>>>>>>>>>>> probe=tcp timeout_seconds=5 >>>>>>>>>>>>> ts=2022-07-04T11:47:59.071251831Z caller=tcp.go:40 >>>>>>>>>>>>> module=smtp_starttls target=1 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Resolving target >>>>>>>>>>>>> address" ip_protocol=ip6 >>>>>>>>>>>>> ts=2022-07-04T11:47:59.071292289Z caller=tcp.go:40 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Resolving target >>>>>>>>>>>>> address" ip_protocol=ip4 >>>>>>>>>>>>> ts=2022-07-04T11:47:59.071327224Z caller=tcp.go:40 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Resolved target >>>>>>>>>>>>> address" ip= 1.1.1.1 >>>>>>>>>>>>> ts=2022-07-04T11:47:59.071354819Z caller=tcp.go:121 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info msg="Dialing >>>>>>>>>>>>> TCP >>>>>>>>>>>>> without TLS" >>>>>>>>>>>>> ts=2022-07-04T11:47:59.072469713Z caller=main.go:130 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Successfully >>>>>>>>>>>>> dialed" >>>>>>>>>>>>> ts=2022-07-04T11:47:59.072508076Z caller=main.go:130 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=info >>>>>>>>>>>>> msg="Processing query >>>>>>>>>>>>> response entry" entry_number=0 >>>>>>>>>>>>> ts=2022-07-04T11:47:59.073453639Z caller=main.go:130 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=debug msg="Read >>>>>>>>>>>>> line" >>>>>>>>>>>>> line="220 ESMTP" >>>>>>>>>>>>> ts=2022-07-04T11:48:04.072081695Z caller=main.go:130 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=error msg="Error >>>>>>>>>>>>> reading >>>>>>>>>>>>> from connection" err="read tcp4 0.0.0.0:53872->1.1.1.1:25: >>>>>>>>>>>>> i/o timeout" >>>>>>>>>>>>> ts=2022-07-04T11:48:04.072269643Z caller=main.go:320 >>>>>>>>>>>>> module=smtp_starttls target= 1.1.1.1 :25 level=error msg="Probe >>>>>>>>>>>>> failed" >>>>>>>>>>>>> duration_seconds=5.00106792 >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Metrics that would have been returned: >>>>>>>>>>>>> # HELP probe_dns_lookup_time_seconds Returns the time taken >>>>>>>>>>>>> for probe dns lookup in seconds >>>>>>>>>>>>> # TYPE probe_dns_lookup_time_seconds gauge >>>>>>>>>>>>> probe_dns_lookup_time_seconds 0.000101683 >>>>>>>>>>>>> # HELP probe_duration_seconds Returns how long the probe took >>>>>>>>>>>>> to complete in seconds >>>>>>>>>>>>> # TYPE probe_duration_seconds gauge >>>>>>>>>>>>> probe_duration_seconds 5.00106792 >>>>>>>>>>>>> # HELP probe_failed_due_to_regex Indicates if probe failed due >>>>>>>>>>>>> to regex >>>>>>>>>>>>> # TYPE probe_failed_due_to_regex gauge >>>>>>>>>>>>> probe_failed_due_to_regex 0 >>>>>>>>>>>>> # HELP probe_ip_addr_hash Specifies the hash of IP address. >>>>>>>>>>>>> It's useful to detect if the IP address changes. >>>>>>>>>>>>> # TYPE probe_ip_addr_hash gauge >>>>>>>>>>>>> probe_ip_addr_hash 2.493392506e+09 >>>>>>>>>>>>> # HELP probe_ip_protocol Specifies whether probe ip protocol >>>>>>>>>>>>> is IP4 or IP6 >>>>>>>>>>>>> # TYPE probe_ip_protocol gauge >>>>>>>>>>>>> probe_ip_protocol 4 >>>>>>>>>>>>> # HELP probe_success Displays whether or not the probe was a >>>>>>>>>>>>> success >>>>>>>>>>>>> # TYPE probe_success gauge >>>>>>>>>>>>> probe_success 0 >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Module configuration: >>>>>>>>>>>>> prober: tcp >>>>>>>>>>>>> timeout: 5s >>>>>>>>>>>>> http: >>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>> follow_redirects: true >>>>>>>>>>>>> tcp: >>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>> query_response: >>>>>>>>>>>>> - expect: ^220 ([^ ]+) ESMTP (.+)$ >>>>>>>>>>>>> send: EHLO prober >>>>>>>>>>>>> - expect: ^250-STARTTLS >>>>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>>>> send: STARTTLS >>>>>>>>>>>>> - expect: ^220 >>>>>>>>>>>>> starttls: true >>>>>>>>>>>>> - send: EHLO prober >>>>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>>>> send: QUIT >>>>>>>>>>>>> icmp: >>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>> dns: >>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>> >>>>>>>>>>>>> On Monday, July 4, 2022 at 7:22:08 PM UTC+8 Brian Candler >>>>>>>>>>>>> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>>> Could you first just try copy-pasting the working config I >>>>>>>>>>>>>> gave you, and see if it gives a different result to yours? >>>>>>>>>>>>>> >>>>>>>>>>>>>> I doubt a mail server would take more than 5 seconds to give >>>>>>>>>>>>>> a banner, but it's possible. Simply doing "telnet x.x.x.x 25" >>>>>>>>>>>>>> will show >>>>>>>>>>>>>> you how your mail server behaves. >>>>>>>>>>>>>> >>>>>>>>>>>>>> On Monday, 4 July 2022 at 11:14:23 UTC+1 ninag...@gmail.com >>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Yes in my code the first expect is quoted. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> smtp_starttls: >>>>>>>>>>>>>>> prober: tcp >>>>>>>>>>>>>>> timeout: 5s >>>>>>>>>>>>>>> tcp: >>>>>>>>>>>>>>> query_response: >>>>>>>>>>>>>>> - expect: "^220 ([^ ]+) ESMTP (.+)$" >>>>>>>>>>>>>>> - send: "EHLO prober\r" >>>>>>>>>>>>>>> - expect: "^250-STARTTLS" >>>>>>>>>>>>>>> - send: "STARTTLS\r" >>>>>>>>>>>>>>> - expect: "^220" >>>>>>>>>>>>>>> - starttls: true >>>>>>>>>>>>>>> - send: "EHLO prober\r" >>>>>>>>>>>>>>> - expect: "^250-AUTH" >>>>>>>>>>>>>>> - send: "QUIT\r" >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Probably due to the "timeout" is too less? Should I adjust >>>>>>>>>>>>>>> 5s to 15s or 60s? >>>>>>>>>>>>>>> On Monday, July 4, 2022 at 5:55:09 PM UTC+8 Brian Candler >>>>>>>>>>>>>>> wrote: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> The following works for me with blackbox_exporter 0.21.0 >>>>>>>>>>>>>>>> (maybe your first 'expect' regexp needs to be quoted?) >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> modules: >>>>>>>>>>>>>>>> smtp_starttls: >>>>>>>>>>>>>>>> prober: tcp >>>>>>>>>>>>>>>> timeout: 5s >>>>>>>>>>>>>>>> tcp: >>>>>>>>>>>>>>>> query_response: >>>>>>>>>>>>>>>> - expect: "^220 ([^ ]+) ESMTP (.+)$" >>>>>>>>>>>>>>>> send: "EHLO prober" >>>>>>>>>>>>>>>> - expect: "^250-STARTTLS" >>>>>>>>>>>>>>>> - expect: "^250 .*$" >>>>>>>>>>>>>>>> send: "STARTTLS" >>>>>>>>>>>>>>>> - expect: "^220" >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> starttls: true >>>>>>>>>>>>>>>> - send: "EHLO prober" >>>>>>>>>>>>>>>> - expect: "^250 .*$" >>>>>>>>>>>>>>>> send: "QUIT" >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Result: >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> # *curl -g >>>>>>>>>>>>>>>> 'localhost:9115/probe?module=smtp_starttls&target=aspmx.l.google.com:25&debug=true'* >>>>>>>>>>>>>>>> Logs for the probe: >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.764604425Z caller=main.go:351 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Beginning probe" probe=tcp timeout_seconds=5 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.764875668Z caller=tcp.go:40 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Resolving target address" target= >>>>>>>>>>>>>>>> aspmx.l.google.com ip_protocol=ip6 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.765954096Z caller=tcp.go:40 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Resolved target address" target= >>>>>>>>>>>>>>>> aspmx.l.google.com ip=2a00:1450:400c:c07::1b >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.766011111Z caller=tcp.go:121 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Dialing TCP without TLS" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.776962616Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Successfully dialed" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.77708032Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=0 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.788075017Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="220 mx.google.com ESMTP >>>>>>>>>>>>>>>> u1-20020a056000038100b0021bbcef3a69si36572085wrf.542 - gsmtp" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.788168204Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Regexp matched" regexp="^220 ([^ ]+) ESMTP >>>>>>>>>>>>>>>> (.+)$" line="220 >>>>>>>>>>>>>>>> mx.google.com ESMTP >>>>>>>>>>>>>>>> u1-20020a056000038100b0021bbcef3a69si36572085wrf.542 - gsmtp" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.788223914Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Sending line" line="EHLO prober" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.788362926Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=1 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801755535Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250-mx.google.com at >>>>>>>>>>>>>>>> your service, [xx:xx:xx:xx::33]" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801856147Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250-SIZE 157286400" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801889927Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-8BITMIME >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801922312Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-STARTTLS >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801955499Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Regexp matched" regexp=^250-STARTTLS >>>>>>>>>>>>>>>> line=250-STARTTLS >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.801989646Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=2 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802029066Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-ENHANCEDSTATUSCODES >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802063318Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-PIPELINING >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802094713Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-CHUNKING >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802126198Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250 SMTPUTF8" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802159858Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Regexp matched" regexp="^250 .*$" line="250 >>>>>>>>>>>>>>>> SMTPUTF8" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802191065Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Sending line" line=STARTTLS >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.802271697Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=3 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.812211682Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="220 2.0.0 Ready to start TLS" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.812279339Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Regexp matched" regexp=^220 line="220 2.0.0 >>>>>>>>>>>>>>>> Ready to start >>>>>>>>>>>>>>>> TLS" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.833573801Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="TLS Handshake (client) succeeded." >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.833793385Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=4 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.833838422Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Sending line" line="EHLO prober" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.833960852Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Processing query response entry" entry_number=5 >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.84464181Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250-mx.google.com at >>>>>>>>>>>>>>>> your service, [xx:xx:xx:xx::33]" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.844771942Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250-SIZE 157286400" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.844839074Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-8BITMIME >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.844910271Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-ENHANCEDSTATUSCODES >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.844974538Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-PIPELINING >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.845061058Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line=250-CHUNKING >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.84512579Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Read line" line="250 SMTPUTF8" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.845193403Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Regexp matched" regexp="^250 .*$" line="250 >>>>>>>>>>>>>>>> SMTPUTF8" >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.84525809Z caller=main.go:144 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=debug msg="Sending line" line=QUIT >>>>>>>>>>>>>>>> ts=2022-07-04T09:50:46.845583228Z caller=main.go:351 >>>>>>>>>>>>>>>> module=smtp_starttls target=aspmx.l.google.com:25 >>>>>>>>>>>>>>>> level=info msg="Probe succeeded" duration_seconds=0.080912196 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Metrics that would have been returned: >>>>>>>>>>>>>>>> # HELP probe_dns_lookup_time_seconds Returns the time taken >>>>>>>>>>>>>>>> for probe dns lookup in seconds >>>>>>>>>>>>>>>> # TYPE probe_dns_lookup_time_seconds gauge >>>>>>>>>>>>>>>> probe_dns_lookup_time_seconds 0.001103057 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> # HELP probe_duration_seconds Returns how long the probe >>>>>>>>>>>>>>>> took to complete in seconds >>>>>>>>>>>>>>>> # TYPE probe_duration_seconds gauge >>>>>>>>>>>>>>>> probe_duration_seconds 0.080912196 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> # HELP probe_failed_due_to_regex Indicates if probe failed >>>>>>>>>>>>>>>> due to regex >>>>>>>>>>>>>>>> # TYPE probe_failed_due_to_regex gauge >>>>>>>>>>>>>>>> probe_failed_due_to_regex 0 >>>>>>>>>>>>>>>> # HELP probe_ip_addr_hash Specifies the hash of IP address. >>>>>>>>>>>>>>>> It's useful to detect if the IP address changes. >>>>>>>>>>>>>>>> # TYPE probe_ip_addr_hash gauge >>>>>>>>>>>>>>>> probe_ip_addr_hash 2.766777767e+09 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> # HELP probe_ip_protocol Specifies whether probe ip >>>>>>>>>>>>>>>> protocol is IP4 or IP6 >>>>>>>>>>>>>>>> # TYPE probe_ip_protocol gauge >>>>>>>>>>>>>>>> probe_ip_protocol 6 >>>>>>>>>>>>>>>> # HELP probe_ssl_earliest_cert_expiry Returns earliest SSL >>>>>>>>>>>>>>>> cert expiry date >>>>>>>>>>>>>>>> # TYPE probe_ssl_earliest_cert_expiry gauge >>>>>>>>>>>>>>>> probe_ssl_earliest_cert_expiry 1.661764429e+09 >>>>>>>>>>>>>>>> # HELP probe_ssl_last_chain_expiry_timestamp_seconds >>>>>>>>>>>>>>>> Returns last SSL chain expiry in unixtime >>>>>>>>>>>>>>>> # TYPE probe_ssl_last_chain_expiry_timestamp_seconds gauge >>>>>>>>>>>>>>>> probe_ssl_last_chain_expiry_timestamp_seconds >>>>>>>>>>>>>>>> 1.661764429e+09 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> # HELP probe_success Displays whether or not the probe was >>>>>>>>>>>>>>>> a success >>>>>>>>>>>>>>>> # TYPE probe_success gauge >>>>>>>>>>>>>>>> probe_success 1 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Module configuration: >>>>>>>>>>>>>>>> prober: tcp >>>>>>>>>>>>>>>> timeout: 5s >>>>>>>>>>>>>>>> http: >>>>>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>>>>> follow_redirects: true >>>>>>>>>>>>>>>> enable_http2: true >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> tcp: >>>>>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>>>>> query_response: >>>>>>>>>>>>>>>> - expect: ^220 ([^ ]+) ESMTP (.+)$ >>>>>>>>>>>>>>>> send: EHLO prober >>>>>>>>>>>>>>>> - expect: ^250-STARTTLS >>>>>>>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>>>>>>> send: STARTTLS >>>>>>>>>>>>>>>> - expect: ^220 >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> starttls: true >>>>>>>>>>>>>>>> - send: EHLO prober >>>>>>>>>>>>>>>> - expect: ^250 .*$ >>>>>>>>>>>>>>>> send: QUIT >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> icmp: >>>>>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>>>>> dns: >>>>>>>>>>>>>>>> ip_protocol_fallback: true >>>>>>>>>>>>>>>> recursion_desired: true >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -- You received this message because you are subscribed to the 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