[BlueOnyx:26515] Re: [EXTERNAL] Re: SSL error when receiving mail from GMAIL

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,

Followed your instructions and it works like a charm. Thank you!

From: Blueonyx  on behalf of Michael Stauber 
via Blueonyx 
Sent: Sunday, 24 September 2023 18:33
To: blueonyx@mail.blueonyx.it 
Subject: [BlueOnyx:26514] Re: [EXTERNAL] Re: SSL error when receiving mail from 
GMAIL

Hi Arie,

> Vsite web- and mailserver aliases are www.ceelie.info
> , ceelie.info and mail.ceelie.info.
> I've selected those three in the LetsEncrypt! module.

Very well. But why does ...

https://www.ceelie.info/
https://mail.ceelie.info/
https://ceelie.info/

... bring up a webpage(s) with a self-signed certificate?

See:
https://www.ssllabs.com/ssltest/analyze.html?d=ceelie.info&hideResults=on&ignoreMismatch=on&latest

> As for the hosting DNS, these are the settings.

Take a look at this: https://www.blueonyx.it/dns-for-email

The righthand side of the DNS MX records (where it points to) must the
the FQDN of the Vsite as shown in the Vsite List.

So in your case that should be "www.ceelie.info" and 
not just
"ceelie.info". The reason for this is how Sendmail/Postfix match the
email aliases to local user accounts.

Here is a third party site for checking TLS:

https://www.checktls.com/

When I try it against a correctly configured 5210R or 5211R it checks
out just fine.

When I test it against ad...@ceelie.info it errors out because you have
a self-signed SSL certificate in your certificate chain:

--
-END CERTIFICATE-
subject=C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info,
emailAddress = elpa...@ceelie.info
issuer=C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info,
emailAddress = elpa...@ceelie.info
---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA-PSS
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 2438 bytes and written 426 bytes
Verification error: self-signed certificate
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Server public key is 4096 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 18 (self-signed certificate) <--- !
--

Make sure the GUI of the BlueOnyx has a valid SSL certificate (Let's
Encrypt or other), too. Because in an SNI environment the GUI cert is
the first certificate in the SNI certificate chain.

So I see three issues:

- DNS best practices for BlueOnyx not followed
- BlueOnyx GUI has no valid SSL certificate
- Vsite itself seems to have a self-signed certificate

 > When trying ...
 >
 > openssl s_client -starttls smtp -connect :
 >
 > ... all three servernames/domains fail for port 25 and 587.
 > Port 443 gives a CONNECTED(0003). Nothing more.

Yes, because that OpenSSL client command has the option "-starttls smtp"
for checking SMTP specifically.

Use this to check the web based TLS:

openssl s_client -connect :443

Or this to check the GUI HTTPS:

openssl s_client -connect :81

I'm not sure what you're doing there, but either you're not supplying
the correct information and the Vsite name is different than
"www.ceelie.info" and/or you're not following the 
instructions and best
practices for BlueOnyx.

If you want, contact me offlist and/or supply a "Support Request" via
the GUI with "Allow access" ticked and I'll take a look directly at the
server.

--
With best regards

Michael Stauber
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[BlueOnyx:26513] LetsEncrypt! SSL error when receiving mail from GMAIL

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,

Seems I was to hasty. When trying openssl s_client -starttls smtp -connect 
:
There is something happening. But,

CONNECTED(0003)
depth=0 C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info, emailAddress = 
elpa...@ceelie.info
verify error:num=18:self signed certificate
verify return:1
depth=0 C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info, emailAddress = 
elpa...@ceelie.info
verify return:1
---
Certificate chain
 0 s:C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info, emailAddress = 
elpa...@ceelie.info
   i:C = NL, L = Leiden, O = Ceelie, CN = mail.ceelie.info, emailAddress = 
elpa...@ceelie.info

and

---
SSL handshake has read 2438 bytes and written 464 bytes
Verification error: self signed certificate
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Server public key is 4096 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 18 (self signed certificate)

It seems to just hang on to the self-signed cert. How to remove this?
Regards,

Arie


C2 VodafoneZiggo Internal
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[BlueOnyx:26512] Re: [EXTERNAL] Re: SSL error when receiving mail from GMAIL

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,

Vsite web- and mailserver aliases are www.ceelie.info, 
ceelie.info and mail.ceelie.info.
I've selected those three in the LetsEncrypt! module.
As for the hosting DNS, these are the settings.

Subdomein   TypePrioTTL Adres
1
@
NS  3600ns1.argewebhosting.eu
2
@
NS  3600ns2.argewebhosting.com
3
@
NS  3600ns3.argewebhosting.nl
4
mail
MX
5
@
MX
6
www
MX
7
www
A
8
mail
A
9
@
A
10
*
A
11
@
TXT
When trying  openssl s_client -starttls smtp -connect :, all 
three servernames/domains fail for port 25 and 587. Port 443 gives a 
CONNECTED(0003). Nothing more.





C2 VodafoneZiggo Internal


From: Blueonyx  on behalf of Michael Stauber 
via Blueonyx 
Sent: Saturday, 23 September 2023 20:22
To: blueonyx@mail.blueonyx.it 
Subject: [EXTERNAL] [BlueOnyx:26507] Re: SSL error when receiving mail from 
GMAIL

Hi Arie,

> Addressed this issue some time ago. I tried LetsEncrypt and it works
> flawless on port 443, but how do I set it for port 25?
>
> Error log:
>
> Sep 23 18:57:19 www postfix/smtpd[249156]: connect from
> mail-yw1-f175.google.com[209.85.128.175]
>
> Sep 23 18:57:19 www postfix/smtpd[249156]: TLS SNI ceelie.info from
> mail-yw1-f175.google.com[209.85.128.175] not matched, using default chain

The Google mailserver established an SMTP TLS connection to
"ceelie.info". This is not the name of your BlueOnyx itself, so if at
all, then Postfix would serve the TLS request using the SNI certificates
that may (or may not) exist for your server.

For starters: Check /etc/postfix/vsite_ssl.map to see if there is a line
starting with "ceelie.info" in it. If not, then you may not have
configured SSL correctly for that Vsite in question.

To troubleshoot this go to the Vsite of which "ceelie.info" is part of,
click on "SSL", click on the button "Let's Encrypt" and see if
"ceelie.info" is listed under "SSL domain aliases". It *should* be
listed on the lefthand side of that table, in which case it will be
included in the validity of the requested SSL certificate as a DNS Alias.

In your case "ceelie.info" wasn't a valid SSL SNI host, so no SSL
certificate was served. In fact it seems that "ceelie.info" seems to use
a self signed certificate at this time? If so, then yeah: That won't fly.

> Sep 23 18:57:19 www postfix/smtpd[249156]: SSL_accept error from
> mail-yw1-f175.google.com[209.85.128.175]: -1
>
> Sep 23 18:57:19 www postfix/smtpd[249156]: warning: TLS library problem:
> error:1417A0C1:SSL routines:tls_post_process_client_hello:no shared
> cipher:ssl/statem/statem_srvr.c:2285:

The SSL connection then failed, because of the missing certificate
and/or incompatibility of shared protocols.

> Sep 23 18:57:19 www postfix/smtpd[249156]: lost connection after
> STARTTLS from mail-yw1-f175.google.com[209.85.128.175]

And that's where Google hung up on you, ending the connection after
having found no common grounds to establish a TLS connection.

To cover all the bases, do this: In the GUI of that Vsite check that
"celie.info" is present as a "Web Server Alias" as well as a "Email
Server Alias". Make sure you have DNS A Records and DNS MX Records for it.

Then as mentioned: Under SSL management of that Vsite under "Let's
Encrypt" include all "SSL domain aliases" you want active in the
Certificate request and request a new SSL certificate.

That will then create a new SSL certificate and it will be integrated
into the SNI configuration of Dovecot and Postfix.

--
With best regards

Michael Stauber
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[BlueOnyx:26506] Re: [EXTERNAL] Re: Error when deleting VSite

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

One down, one to go. the SSL issue when sending mail from GMAIL to my 
server



Like I suspected: SQL errror. But this also reminds me to change that
handler to soft-fail and still allow Vsite deletion. Even if it
potentially leaves the SQL user and DBs around.



C2 VodafoneZiggo Internal
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[BlueOnyx:26505] SSL error when receiving mail from GMAIL

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Addressed this issue some time ago. I tried LetsEncrypt and it works flawless 
on port 443, but how do I set it for port 25?

Error log:

Sep 23 18:57:19 www postfix/smtpd[249156]: connect from 
mail-yw1-f175.google.com[209.85.128.175]
Sep 23 18:57:19 www postfix/smtpd[249156]: TLS SNI ceelie.info from 
mail-yw1-f175.google.com[209.85.128.175] not matched, using default chain
Sep 23 18:57:19 www postfix/smtpd[249156]: SSL_accept error from 
mail-yw1-f175.google.com[209.85.128.175]: -1
Sep 23 18:57:19 www postfix/smtpd[249156]: warning: TLS library problem: 
error:1417A0C1:SSL routines:tls_post_process_client_hello:no shared 
cipher:ssl/statem/statem_srvr.c:2285:
Sep 23 18:57:19 www postfix/smtpd[249156]: lost connection after STARTTLS from 
mail-yw1-f175.google.com[209.85.128.175]
Sep 23 18:57:19 www postfix/smtpd[249156]: disconnect from 
mail-yw1-f175.google.com[209.85.128.175] ehlo=1 starttls=0/1 commands=1/2



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[BlueOnyx:26503] Re: [EXTERNAL] Re: Error when deleting VSite

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Found the solution in
https://www.mail-archive.com/blueonyx@mail.blueonyx.it/msg17128.html

Thanx, all!



C2 VodafoneZiggo Internal


From: Ceelie, Arie (VodafoneZiggo) 
Sent: Saturday, 23 September 2023 16:06
To: BlueOnyx General Mailing List 
Subject: Re: [EXTERNAL] [BlueOnyx:26499] Re: Error when deleting VSite

P.S.


when trying to delete in the GUI, /var/log/messages shows this:

Sep 23 16:02:12 www cced(smd)[128308]: client [0:128283] has admin rights
Sep 23 16:02:12 www cced(smd)[128308]: client 9:[0:128283]: DESTROY  60
Sep 23 16:02:12 www cced(smd)[128308]: -- handler returned 1
Sep 23 16:02:12 www cced(smd)[128308]: handler 
handlers/Compass/webapps/vsite_userdel.pl failed
Sep 23 16:02:12 www cced(smd)[128308]: client 9:[0:128283]: DESTROY failed


/var/log/messages says
Sep 23 13:43:39 www cced(smd)[75627]: client [0:75614] has admin rights
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: AUTHKEY to user "" 
failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY  60
Sep 23 13:43:39 www cced(smd)[75627]: -- handler returned 1
Sep 23 13:43:39 www cced(smd)[75627]: handler 
handlers/Compass/webapps/vsite_userdel.pl failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY failed

Any suggestions?

Thanks,

Arie

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[BlueOnyx:26502] Re: [EXTERNAL] Re: Error when deleting VSite

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

P.S.


when trying to delete in the GUI, /var/log/messages shows this:

Sep 23 16:02:12 www cced(smd)[128308]: client [0:128283] has admin rights
Sep 23 16:02:12 www cced(smd)[128308]: client 9:[0:128283]: DESTROY  60
Sep 23 16:02:12 www cced(smd)[128308]: -- handler returned 1
Sep 23 16:02:12 www cced(smd)[128308]: handler 
handlers/Compass/webapps/vsite_userdel.pl failed
Sep 23 16:02:12 www cced(smd)[128308]: client 9:[0:128283]: DESTROY failed


/var/log/messages says
Sep 23 13:43:39 www cced(smd)[75627]: client [0:75614] has admin rights
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: AUTHKEY to user "" 
failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY  60
Sep 23 13:43:39 www cced(smd)[75627]: -- handler returned 1
Sep 23 13:43:39 www cced(smd)[75627]: handler 
handlers/Compass/webapps/vsite_userdel.pl failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY failed

Any suggestions?

Thanks,

Arie



C2 VodafoneZiggo Internal
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[BlueOnyx:26501] Re: [EXTERNAL] Re: Error when deleting VSite

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,

tried that. Site and group site1 still exists. Var/log/messages says
Sep 23 13:43:39 www cced(smd)[75627]: client [0:75614] has admin rights
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: AUTHKEY to user "" 
failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY  60
Sep 23 13:43:39 www cced(smd)[75627]: -- handler returned 1
Sep 23 13:43:39 www cced(smd)[75627]: handler 
handlers/Compass/webapps/vsite_userdel.pl failed
Sep 23 13:43:39 www cced(smd)[75627]: client 0:[0:75614]: DESTROY failed

Any suggestions?

Thanks,

Arie




Identify the group name of the Vsite. It's something like "site22". Then
run this command:

/usr/sausalito/sbin/vsite_destroy.pl site22

That will delete Vsite "site22" and all data related to it - including
Users, DNS, SQL databases, Aliases and so on.



C2 VodafoneZiggo Internal
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[BlueOnyx:26498] Error when deleting VSite

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

All,

Running on 5210R. I created a VSite for testing a few things. When finished I 
tried to delete the VSite in the GUI. Not working, I received this error:

Task Status

The server encountered an internal error and was unable to complete your 
request.


How do I delete the VSite? Maybe a command line or such?
Thanx in advance,

Arie




C2 VodafoneZiggo Internal
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[BlueOnyx:26406] Re: [EXTERNAL] Re: Mailproblems, the saga continues

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,

Thanx. I checked the DNS records, they all seem to be Hunky Dory.
Real problem with Gmail seems to lay in the name I use for the server and the 
missing of the certificate. I tried generating an new certificate but it keeps 
saying the vsite is missing.
Alas I lack the time to dive into it right now.
Regards,

Arie


>Here is a little guide that explains how email is handled on BlueOnyx:
>https://www.blueonyx.it/dns-for-email
>In general: The server itself has a name and for that name you need a DNS A 
>record and DNS MX record. Plus a reverse record.

C2 VodafoneZiggo Internal

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[BlueOnyx:26404] Re: [EXTERNAL] Re: Mailproblems, the saga continues

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Taco,

Hardware info in GUI says I'm running on AlmaLinux release 8.8 (Sapphire 
Caracal)

and

Canonical Hostname X10-server.fritz.box

I will begin with changing this last to ceelie.info and take it from there.

More to follow.
Regards,

Arie


From: Taco Scargo 
Sent: Monday, 7 August 2023 09:58
To: Ceelie, Arie (VodafoneZiggo) ; BlueOnyx 
General Mailing List 
Subject: [EXTERNAL] Re: [BlueOnyx:26402] Mailproblems, the saga continues

Hi Ceelie,

Unless you are on 5211R and have mail.ceelie.info<http://mail.ceelie.info> 
added to your sites or web aliases and use a proper Let’s Encrypt cert, your 
server will report it is x10-server.fritz.box, which is not a valid hostname 
and will definitely not have a valid certificate.

Can you double check that? Google is very strict on these things nowadays.

Best regards,

Taco Scargo


On 5 Aug 2023, at 20:58, Ceelie, Arie (VodafoneZiggo) via Blueonyx 
 wrote:

Hi Taco,



All other mails arrive at the users mailbox, so I guess it is not a MX problem.
The domain affected is ceelie.info.



Thanx in advance.



From: Taco Scargo 
Sent: vrijdag 4 augustus 2023 14:39
To: Ceelie, Arie (VodafoneZiggo) ; BlueOnyx 
General Mailing List 
Subject: [EXTERNAL] Re: [BlueOnyx:26400] Mailproblems, the saga continues



Maybe your servers certificate has expired?
Or in DNS the MX entry does not point to the actual server hostname?
If you provide me with the domain affected, I can quickly check.



Kind regards,



Taco Scargo

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[BlueOnyx:26402] Re: Mailproblems, the saga continues

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Taco,



All other mails arrive at the users mailbox, so I guess it is not a MX problem.

The domain affected is ceelie.info.



Thanx in advance.



From: Taco Scargo 
Sent: vrijdag 4 augustus 2023 14:39
To: Ceelie, Arie (VodafoneZiggo) ; BlueOnyx 
General Mailing List 
Subject: [EXTERNAL] Re: [BlueOnyx:26400] Mailproblems, the saga continues



Maybe your servers certificate has expired?

Or in DNS the MX entry does not point to the actual server hostname?

If you provide me with the domain affected, I can quickly check.



Kind regards,



Taco Scargo
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[BlueOnyx:26400] Mailproblems, the saga continues

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

All,

My wife notified me that our daughter is not able to send us mail from her 
gmail account. She got an auto reply stating there is a handshake problem 
occurring.
A few lines from the reply she got:
TLS negotiation failed
Starttls error 71
SSLV3_HANDSHAKE_FAILURE
SSL alert number 40

Funny thing is we are able to send mail to gmail, but not receive mail from 
gmail. It seems only gmail has this problem.
Any suggestions anyone on how to fix this? Can I fix it at all?
Regards,

Arie




C2 VodafoneZiggo Internal
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[BlueOnyx:26386] Re: [EXTERNAL] Internet issues

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Not funny but your rant is priceless!

From: Blueonyx  on behalf of Michael Stauber 
via Blueonyx 
Sent: Wednesday, 2 August 2023 19:53
To: BlueOnyx General Mailing List 
Subject: [EXTERNAL] [BlueOnyx:26385] Internet issues

Hi all,

Just a quick heads up: Since Monday I'm without reliable internet
connection and am on a mobile line that also craps out or slows to a
crawl every now and then.

I'm trying to respond to emails, but even that is really dodgy right now.

What happened? We have three big internet providers in Colombia. We're
with a shack called Tigo and and their competitor MoviStar (subsidiary
of Telefonica) installed fiber-optics in our complex last week. On
Monday when they left they "accidentally" (yeah, rright!) caused a
damage that affected all internet installations of their competitors in
our complex. And as things go with all three providers: You can get a
new contract (with same day install) lined up in fifteen minutes, or you
have to wrestle with support for days until they send a technician to
fix damage in an existing installation. Just spent three hours again in
the waiting line in front of their office until it was my turn to
"enthusiastically" rave about their stellar support. After all: A black
hole is a stellar object, too. :p

--
With best regards

Michael Stauber
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[BlueOnyx:26282] Postfix catch-all issue

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

I added the line
@ceelie.infoadmin
at the bottom of the virtual file. Rebuild the db with the postmap command.
I was expecting all mails with @domain to be sent to user 
'admin'.
I just found out ALL mails (known users included) are sent to user 'admin' 
instead of being deliver to local users.
I thought postfix followed the virtual.db line for line, and if no user/alias 
is found it would use the last line (catch-all).
This seems not to be the case.
Did I overlook something here?
Regards,

Arie
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[BlueOnyx:26279] Re: [EXTERNAL] testing

[Ceelie, Arie (VodafoneZiggo) via Blueonyx]

Hi Michael,



Commenting this out resulted in a ‘deferred’status with the remote smtp server. 
Mails are not sent……. So I uncommented it and mails get sent once again.

Regards,



Arie



==>Maillog says

==>Jun 2 17:05:52  x10-server postfix/smtp[379340]: 
32AB46093F33: to=mailto:blueonyx@mail.blueonyx.it>>, 
relay=smtp.ziggo.nl[212.54.42.9]:587, 
delay=0.65, delays=0.2/0.02/0.43/0, dsn=4.7.0, status=deferred (SASL 
authentication failed; cannot authenticate to server 
smtp.ziggo.nl[212.54.42.9]: no 
mechanism available)



From: Blueonyx  on behalf of Blueonyx--- via 
Blueonyx 
Sent: Friday, 2 June 2023 17:05
To: blueonyx@mail.blueonyx.it 
Subject: [EXTERNAL] [BlueOnyx:26278] testing


Testing # smtp_sasl_security_options = noanonymous in main.cf

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