Re: New report function for libopensmtpd
If you follow this, you will not be so far of: https://man.openbsd.org/style On 18/10/2022 12:00, Martin Kjær Jørgensen wrote: Okay I will. Have you got a pattern the code should be written in or a tool, like clang-format, to check/format with?
Re: bounce invalid message IDs?
Hey, yes that is possible if you write your own filter. You get the content you need and can reject it from your filter. Greetings Leo On 04.07.22 09:34, Harald Dunkel wrote: is it possible to bounce invalid message IDs, e.g. using a UUID instead of the well-known format (https://en.wikipedia.org/wiki/Message-ID)?
Re: msgid and sending via email providers
Hey, i am not sure if that is directly related to you problem, but t-online.de is one of the worst email providers i have ever seen. They eandomly block you for no reason. Last month i got bocked because the hostname of my email server did not contain the word "mail". They demandet that all of the sudden. Then they only accepted emails from my servers if on the same IP as the mailserver there was a websever that served a valid impress/legal notce. Totally nuts that t-online.de company. Meybe this helps you a bit. Greetings Leo On 03/11/2021 14:38, Manfred Lotz wrote: Hi there, Could a msgid cause problems insofar as their content might be seen as an indicator that the mail is SPAM? My situation: I have a couple of email providers, where I send mails from. In Opensmtp I have something like this ... action "posteo.de" relay host smtps://pos...@posteo.de auth action "t-online.de" relay host smtps://tonl...@securesmtp.t-online.de auth ... Now when sending mail as manfred.lotz at posteo.de or manfred.lotz at t-online.de the msgid always contains the local hostname which is simply hogwart in /etc/hostname. My laptop is not registered with a dns lookable server name. Question: Is there a possibility to tell opensmtp to create a msgid like ed8c9804c3dda99d8207f4ae945cd...@posteo.de> instead of ed8c9804c3dda99d8207f4ae945cddcf@hogwart> when I send mails with From: manfred.lotz @ posteo.de? Same for the other account. Thanks.
Forwarding to one or more accounts
Hi,
i am on the latest OpenBSD release and i have a little email server
running. It works perfect, very stable. I host the following domains:
foo.com
bar.com
Both of them have some email accounts on them.
us...@foo.com
us...@foo.com
us...@bar.com
The config is as follows:
##
## Tables
##
table aliases file:/etc/mail/aliases
table vdomains file:/etc/mail/table-vdomains
table vaddr file:/etc/mail/table-vaddr
table credentials file:/etc/mail/table-credentials
table filter-dyndns file:/etc/mail/table-filter-dyndns
table vmailstub file:/etc/mail/table-vmailstub
##
## Listen
##
listen on lo0
listen on egress tls filter { "check-dyndns" "check-rdns" "check-fcrdns"
"dnsbl" }
listen on egress port submission tls-require auth
listen on egress port 25255 tls-require auth
##
## Actions
##
action "outbound" relay
action "local-lmtp" lmtp "/var/dovecot/lmtp" rcpt-to virtual
##
## Matches
##
match from any for domain rcpt-to action "local-lmtp"
match auth from any for any action "outbound"
Here are the tables:
# table-vdomains
foo.com
bar.com
# table-vaddr
us...@foo.com
us...@foo.com
us...@bar.com
user1al...@foo.com
# table-vmailstub
user1al...@foo.com us...@foo.com
@ dovecot-worker
Up until this point it works perfectly (i remove the TLS stuff from the
email for clarity)
us...@foo.com, us...@foo.com and us...@bar.com can access there emails
via IMAP over Dovecot, OpenSMTPD hands of emails via lmtp to Dovecot and
emails send to user1al...@foo.com are stored in the us...@foo.com account.
But here is my problem, now i want to add "forwardings" for some
accounts. An email send to us...@foo.com should be stored in the mailbox
but also send ot us...@external-domain-gmail.com. Sadly i have no idea
on how to do that. Any ideas? Maybe i am not finding stuff because
"forwarding" is the wrong term for this? Maybe you could be so kind to
send me off in the right direction.
That would be sooo nice of you!
Thanks and greetings
Leo
Re: Usage example for filter-dnsbl
Hey, thanks for the response. It works very well now. Thank you so much! Greetings, Leo On 2020-08-17 12:10, Martijn van Duren wrote: I run filter-dnsbl as follow: ... filter dnsbl proc-exec "filter-dnsbl -mv zen.spamhaus.org dnsbl.dronebl.org bl.spamcop.net" ... listen on egress tls pki keys filter dnsbl ... To be clear: filters in proc-exec chooes their own "phase, so there's no need for you to worry about that. The only thing you need to know is which blacklists you want to use and on which listen socket they should be executed on (and optionally where in a filter-chain if you have multiple).
Usage example for filter-dnsbl
Hey, i installed the filter "filter-dnsbl" from here (http://imperialat.at/dev/filter-dnsbl/) and now i want to add it to my config. However, i have to admit i have no idea how to do that? In what "phase" should i put this filter? I looked around but i found a couple of outdated blog posts on filters, but nothing current. I also read thru here (https://github.com/openbsd/src/blob/master/usr.sbin/smtpd/smtpd-filters.7), but i found nothing. If someone of you has a working example on how to use that filter, could you please be so kind and send it to me? Thanks so much and greetings Leo
Re: Virtual user and domain setup
Hey,
thank you s much for that snippet. I think i finally understood it
and it works now. I had to addapt your config a little bit but it works
now. I use basically your config with the action changed to the following:
action "local-lmtp" lmtp "/var/dovecot/lmtp" rcpt-to virtual
At first i give it a try without the rcpt-to option to lmtp, but without
that Dovecot always rejected the email for the user "vmail". But now
with the rcpt-to it works perfectly.
Thank you all so much for the help and greetings from Vienna
Leo
Am 07.04.2020 um 01:36 schrieb Andrew Swartz:
This is one possible configuration which should do that which I think
you are describing:
-
table vdomains file:/etc/mail/table_vmail_domains
table vaddr file:/etc/mail/table_vmail_addresses
table vmailstub { '@' = vmail }
action "deliver_vmail" maildir
"/home/vmail/domains/%{rcpt.domain:lowercase}/%{rcpt.user:lowercase|strip}"
virtual
match from any for domain rcpt-to action "deliver_vmail"
-
This setup accepts mail ONLY for virtual accounts and delivers it to a
typical "vpopmail" maildir structure: "/home/vmail/domain/name"
You must create a system user "vmail" which does not receive any mail
but is just the home folder for the mailboxes and the user for
permission to deliver the mail.
Automate making the domains file with a script which extracts the unique
domains from the addresses file. The redundancy here is due to the
smtpd.conf requirements (i.e. not because I think it's cool to have both
domain and email address files).
If it's not clear, I can elaborate on how it works.
Re: Virtual user and domain setup
Hey,
thank you for your response. I have a question to your workaround. In
the userinfo table, did you specify every email address in there that is
a virtual address? Or did you define the user that does the LMTP deliver
to dovecot?
Also, would you mind pasting an example from your recipients and
virtuals table? So i could check against my stuff? Maybe i messed the
format up somewhere.
Thanks so much and greetings
Leo
Am 05.04.2020 um 15:57 schrieb Kai Stammer:
Hi all,
i have the same problem. My current workaround is to use a userbase-table:
action "inbound" lmtp 127.0.0.1:24 virtual userbase
Instead of:
action "inbound" lmtp 127.0.0.1:24 virtual user "vmail"
== userinfo table
virtualuser1 1010:1010:/home/vmail
virtualuser2 1010:1010:/home/vmail
virtualuser3 1010:1010:/home/vmail
==
Configuration file (FreeBSD 12.1 - OpenSMTPD 6.6.4p1):
# === General === #
queue ttl 1h
smtp max-message-size 120M
# === TLS Certificates === #
pki mydomain.de cert "fullchain.pem"
pki mydomain.de key "privkey.pem"
# === Tables === #
table recipients file:/usr/local/etc/mail/tables/recipients
table outgoing file:/usr/local/etc/mail/tables/outgoing
table credentials file:/usr/local/etc/mail/tables/credentials
table virtuals file:/usr/local/etc/mail/tables/virtuals
table userinfo file:/usr/local/etc/mail/tables/userinfo
# === Filter === #
filter no_dyndns phase connect match rdns regex { '.*\.dyn\..*',
'.*\.dsl\..*' } disconnect "550 no residential connections"
filter no_rdns phase connect match !rdns disconnect "550 no valid
rdns entry"
filter no_fcrdns phase connect match !fcrdns disconnect "550 no valid
fcrdns entry"
# === Listen === #
listen on em1 inet4 port smtp
tls pki mydomain.de filter
{ no_dyndns, no_rdns, no_fcrdns }
listen on em1 inet4 port submission tls-require auth
senders pki mydomain.de
# === Actions === #
action "inbound" lmtp 127.0.0.1:24 virtual userbase
action "outbound" relay
# === Handle Messages === #
match from any for any rcpt-to action "inbound"
match from any auth for any action "outbound"
Am 05.04.2020 um 15:54 schrieb Leo Unglaub:
Hey,
thank you for your help. I am going to describe my goal a little bit
different, maybe it gets clearer when i do.
I am trying to have a list of email accounts that OpenSMTPD recieves
emails for and sends to Dovecot via lmtp without having the email
accounts as real system accounts on that server. Currently there is a
Postfix running for that usecase and in there i have virtual maps for
those cases:
- virtual_mailbox_maps
- virtual_mailbox_domains
But i want to switch that server from Postfix to OpenSMTPD because i
like OpenSMTPD much more and it comes with OpenBSD in base.
So i am looking for a way to recieve emails for accounts that dont
have a system account on that server and just send them to Dovecot.
An alias map is not helping me here because i cannot say
us...@foo.com: us...@foo.com
As far as i understand it, that would create a loop.
Thanks and greetings
Leo
Am 05.04.2020 um 14:35 schrieb Tassilo Philipp:
I might be misunderstanding what you are trying to achieve, but it
sounds to me that you need mail aliases.
Check the "alias" option of "action", and also the section "Aliasing
tables" in table(5).
hth
Re: Virtual user and domain setup
Hey, of course i can share my entire config. Its from a fresh start and i keept it as simple as possible. ## ## Queue ## queue compression queue encryption <32 char passphrase> ## ## Tables ## table aliases file:/etc/mail/aliases table passwd file:/etc/mail/yace-passwd ## ## PKI ## pki "mail.foo.com" cert "/etc/ssl/mail.foo.com.crt" pki "mail.foo.com" key "/etc/ssl/private/mail.foo.com.key" pki "mail.bar.com" cert "/etc/ssl/mail.bar.com.crt" pki "mail.bar.com" key "/etc/ssl/private/mail.bar.com.key" smtp max-message-size 80M ## ## Listen ## listen on lo0 listen on egress tls pki "mail.foo.com" auth hostname "mail.foo.com" ## ## Actions ## action "outbound" relay action "local_lmtp_deliver" lmtp "/var/dovecot/lmtp" user "dovecot-worker" ## ## Matches ## match from any for any action local_lmtp_deliver match for any action outbound I have read Gilles article multiple times and also all other articles i found on the topic. But it seams to me that i understand the http://man.openbsd.org/smtpd.conf#user option wrong or it does not work as i understand it. All articles i found asume that you have a system account at the end of the process that handles the email somehow. But since i am sending it to Dovecot via lmtp i dont need a real system account for every email account because Dovecot just has its own /etc/dovecot/virtual-passwd file. Thanks so much for your help! Leo Am 05.04.2020 um 14:46 schrieb Matt Schwartz: Hi Leo, Would you mind sharing your full configuration file? Without this, I am stuck on how to help you. I have done a lot with virtual users and domains so I think I can help. You could also see Gilles Chehade's article, https://poolp.org/posts/2019-09-14/setting-up-a-mail-server-with-opensmtpd-dovecot-and-rspamd/. It's very well written. Best, Matt
Re: Virtual user and domain setup
Hey, thank you for your help. I am going to describe my goal a little bit different, maybe it gets clearer when i do. I am trying to have a list of email accounts that OpenSMTPD recieves emails for and sends to Dovecot via lmtp without having the email accounts as real system accounts on that server. Currently there is a Postfix running for that usecase and in there i have virtual maps for those cases: - virtual_mailbox_maps - virtual_mailbox_domains But i want to switch that server from Postfix to OpenSMTPD because i like OpenSMTPD much more and it comes with OpenBSD in base. So i am looking for a way to recieve emails for accounts that dont have a system account on that server and just send them to Dovecot. An alias map is not helping me here because i cannot say us...@foo.com: us...@foo.com As far as i understand it, that would create a loop. Thanks and greetings Leo Am 05.04.2020 um 14:35 schrieb Tassilo Philipp: I might be misunderstanding what you are trying to achieve, but it sounds to me that you need mail aliases. Check the "alias" option of "action", and also the section "Aliasing tables" in table(5). hth
