Resolved Email Issues upon Reboot

[sshelby]

Server operating system version

Ubuntu 24.04.1 LTS

Plesk version and microupdate number

18.0.65

I recently moved my websites from Centos to Ubuntu. Every thing worked fine until I had to reboot the server when I noticed that I could no longer authenticate using SMTP and POP3 mail was not working. After further investigation I found that Dovecot IMAP and POP3 server service had not started. After a great deal of troubleshooting I ran plesk repair mail which resolved the SMTP authentication issues. The next time I rebooted the server the issue occured again. This time I simply ran plesk repair mail which resolved both issues. Is there a way to resolve the issue so that I do not need to repair mail everytime the server reboots?

 

[Raul A.]

Is the service enabled?

# systemctl status dovecot
● dovecot.service - Dovecot IMAP/POP3 email server
     Loaded: loaded (/etc/systemd/system/dovecot.service; >>>>enabled<<<<; vendor preset: enabled)
     Active: active (running) since Mon 2024-09-30 20:02:01 EEST; 2 months 4 days ago
   Main PID: 680 (dovecot)

What does Plesk repair say about the mail service? Perhaps run it with -v parameter.

 

[sshelby]

Thank you for the help.

The repair command does not return any issues even though the problems is resolbed after it runs. Here is the results when run with the -v parameter.


Here is what it looks like when everything is working after reboot:


Here is what it looks like after reboot and before the repair:

 

[WebHostingAce]

Try,

#systemctl is-enabled dovecot

If it is returning 'disabled', enable it on the reboot.

#systemctl enable dovecot

To me it is look like it disabled on the reboot. '/usr/lib/systemd/system/dovecot.service; disabled;'

 

[sshelby]

Thank you, that did correct the issue with POP3 email not working after reboot but did not correct the SMTP authentication error. It still requires me to run the plesk repair mail command after reboot. Here is the error:

NOQUEUE: milter-reject: EHLO from mydomain.com[MY IP ADDRESS]: 451 4.7.1 Service unavailable - try again later; proto=SMTP helo=<www.mydomain.com>

 

[WebHostingAce]

I think you should be running Postfix for SMTP. You can make sure this by visiting 'Tool & Settings > Mail Server Settings'

Try,

#systemctl status postfix

after a reboot and make sure the service is running.

 

[sshelby]

It does appear to be running after reboot but still fails authentication until I repair mail.

 

[sshelby]

Thanks again for your help. I found a reference to the Milter service not running may cause this so I did a reboot and found that that to be the case. After enabling it the issue was resolved. I will try *systemctl enable pc-remote.service to see if that resolves the issue.

 

[WebHostingAce]

Glad to hear you have resolved your issue.

I'm not sure what really happened.

These services should have been enabled on reboot by default.

 

[sshelby]

I did a server reboot this morning and all services started as expected and email is working. Thank you for your expertice!