The Dovecot IMAP/POP3 Server

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1

SYSTEM INFORMATION
OS type and version Ubuntu Linux 24.04.1
Virtualmin version 7.20.2
Webmin version 2.202
Usermin version 2.102

problem is with the Dovecot IMAP/POP3 Server, which is currently not working. Out of three websites, one is working while the other two are down, and I’m not sure how to fix them

mail.err

2024-12-06T16:09:11.750826+00:00 hy76 postfix/smtpd[499244]: fatal: no SASL authentication mechanisms
2024-12-06T16:17:58.261134+00:00 hy76 postfix/smtpd[500414]: fatal: no SASL authentication mechanisms
2024-12-06T17:00:53.988685+00:00 hy76 postfix/smtpd[509851]: fatal: no SASL authentication mechanisms

file hy76_error_log on
[Sat Nov 30 15:13:01.771460 2024] [ssl:debug] [pid 1343:tid 132362641299328] ssl_util_ssl.c(451): AH02412: [hy76:443] Cert matches for name ‘hy76’ [subject: CN=hy76 / issuer: CN=R10,O=Let’s Encrypt,C=US / serial: 03A3B67A15511CDA21150ACD6D2917C1D9CD / notbefore: Oct 2 11:15:54 2024 GMT / notafter: Dec 31 11:15:53 2024 GMT]
[Sat Nov 30 15:13:01.771497 2024] [ssl:info] [pid 1343:tid 132362641299328] AH02568: Certificate and private key hy76:443:0 configured from /etc/ssl/virtualmin/172120963577612/ssl.cert and /etc/ssl/virtualmin/172120963577612/ssl.key

file hy77_error_log off
[Sat Nov 30 15:13:01.771818 2024] [ssl:info] [pid 1343:tid 132362641299328] AH01914: Configuring server hy77:443 for SSL protocol
[Sat Nov 30 15:13:01.773400 2024] [ssl:debug] [pid 1343:tid 132362641299328] ssl_engine_init.c(526): AH01893: Configuring TLS extension handling
[Sat Nov 30 15:13:01.776149 2024] [ssl:emerg] [pid 1343:tid 132362641299328] AH02565: Certificate and private key hy77:443:0 from /etc/ssl/virtualmin/171959300876691/ssl.combined and /etc/ssl/virtualmin/171959300876691/ssl.key do not match

file hy78_error_log off
[Sat Nov 30 13:41:09.544048 2024] [ssl:debug] [pid 1356:tid 135204331136896] ssl_util_ssl.c(451): AH02412: [hy78:443] Cert matches for name ‘hy78’ [subject: CN=hy78 / issuer: CN=R11,O=Let’s Encrypt,C=US / serial: 03FBB25F240171049EC04398C79ABD9B4643 / notbefore: Nov 10 14:55:52 2024 GMT / notafter: Feb 8 14:55:51 2025 GMT]
[Sat Nov 30 13:41:09.544086 2024] [ssl:info] [pid 1356:tid 135204331136896] AH02568: Certificate and private key hy78:443:0 configured from /etc/ssl/virtualmin/172330762125204/ssl.cert and /etc/ssl/virtualmin/172330762125204/ssl.key
[Sat Nov 30 15:13:01.510185 2024] [ssl:info] [pid 1343:tid 132362641299328] AH01914: Configuring server hy78:443 for SSL protocol
[Sat Nov 30 15:13:01.534567 2024] [ssl:debug] [pid 1343:tid 132362641299328] ssl_engine_init.c(2220): AH02209: CA certificate: CN=R11,O=Let’s Encrypt,C=US
[Sat Nov 30 15:13:01.534711 2024] [ssl:debug] [pid 1343:tid 132362641299328] ssl_engine_init.c(526): AH01893: Configuring TLS extension handling
[Sat Nov 30 15:13:01.542737 2024] [ssl:debug] [pid 1343:tid 132362641299328] ssl_util_ssl.c(451): AH02412: [hy78:443] Cert matches for name ‘hy78’ [subject: CN=hy78 / issuer: CN=R11,O=Let’s Encrypt,C=US / serial: 03FBB25F240171049EC04398C79ABD9B4643 / notbefore: Nov 10 14:55:52 2024 GMT / notafter: Feb 8 14:55:51 2025 GMT]
[Sat Nov 30 15:13:01.542775 2024] [ssl:info] [pid 1343:tid 132362641299328] AH02568: Certificate and private key hy78:443:0 configured from /etc/ssl/virtualmin/172330762125204/ssl.cert and /etc/ssl/virtualmin/172330762125204/ssl.key

sudo systemctl status dovecot
× dovecot.service - Dovecot IMAP/POP3 email server
Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; preset: enabled)
Active: failed (Result: exit-code) since Fri 2024-12-06 16:26:08 UTC; 45min ago
Docs: man:dovecot(1)
https://doc.dovecot.org/
Process: 502681 ExecStart=/usr/sbin/dovecot -F (code=exited, status=89)
Main PID: 502681 (code=exited, status=89)
CPU: 36ms

sudo systemctl restart dovecot
Job for dovecot.service failed because the control process exited with error code.
See “systemctl status dovecot.service” and “journalctl -xeu dovecot.service” for details.

sudo systemctl status postfix

● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; preset: enabled)
Active: active (exited) since Thu 2024-12-05 06:25:29 UTC; 2 days ago
Docs: man:postfix(1)
Main PID: 1647 (code=exited, status=0/SUCCESS)
CPU: 3ms

Dec 05 06:25:29 hy77 systemd[1]: Starting postfix.service - Postfix Mail Transport Agent…
Dec 05 06:25:29 hy77 systemd[1]: Finished postfix.service - Postfix Mail Transport Agent.

2

We need to see Dovecot journal entries when you try to restart it.

Watch the journal for the Dovecot unit (journalctl -fu dovecot) in one terminal session and in another restart the Dovecot service (systemctl restart dovecot). That should show some useful errors in the journal.

1 Like
3

journalctl -fu dovecot
Dec 06 16:26:08 hy77 systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a
Dec 06 16:26:08 hy77 systemd[1]: dovecot.service: Failed with result ‘exit-code’.
Dec 06 16:26:08 hy77 systemd[1]: Failed to start dovecot.service - Dovecot IMAP/POP3 email server.
Dec 06 17:13:48 hy77 systemd[1]: Starting dovecot.service - Dovecot IMAP/POP3 email server…
Dec 06 17:13:48 hy77 dovecot[512588]: doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf
Dec 06 17:13:48 hy77 dovecot[512588]: doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:69: ssl_protocols has been replaced by ssl_min_protocol
Dec 06 17:13:48 hy77 dovecot[512588]: doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf line 104: ssl_cert: Can’t open file /etc/ssl/virtualmin/171959300876691/ssl.combined: No such file or directory
Dec 06 17:13:48 hy77 systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a
Dec 06 17:13:48 hy77 systemd[1]: dovecot.service: Failed with result ‘exit-code’.
Dec 06 17:13:48 hy77 systemd[1]: Failed to start dovecot.service - Dovecot IMAP/POP3 email server.

systemctl restart dovecot
Failed to restart dovecot.service: Interactive authentication required.
See system logs and ‘systemctl status dovecot.service’ for details.

4

Pretty sure this actually has the same cause as your Apache problem. Normally, Virtualmin handles keeping the certs available across services, but you’ve used certbot manually, which broke your certs.

5

I made a mistake in the server settings. How can we fix this?
What exactly should I do

6

You maybe have go through the lines in the conf file that are causing the error and remove or comment them out so the server can start.
I think line 104 is looking for /etc/ssl/virtualmin/171959300876691/ssl.combined

Try that.

Looking at my file maybe remove the whole section from local_name to the closing backet }.
Before you do it copy to notepad as backup.

7

Warning!
The SSL certificate file /etc/ssl/virtualmin/171959300876691/ssl.cert for hy77 is invalid : Data starts with -----BEGIN CERTIFICATE REQUEST----- , but expected -----BEGIN CERTIFICATE-----

8

Warning!
The SSL certificate file /etc/ssl/virtualmin/171959300876691/ssl.cert for hy77 is invalid : Data starts with -----BEGIN CERTIFICATE REQUEST----- , but expected -----BEGIN CERTIFICATE-----

i fixed copy file ssl.cert from hy76 and past hy77 its work but

9

how can fixed this error

file is mail .err
2024-12-08T13:57:09.761296+00:00 hy76 postfix/smtpd[1027985]: fatal: no SASL authentication mechanisms

10

can help me please

11

not all email work in port 2000 but not can counncted with outlook! and not can send any email