Problems sending mail from Roundcube and Thunderbird

Community Support Mail
1

Hello, i have problems sending email throug roundcube and thunderbird, not sure if these problems related or separate…

Both of them can receive emails normally, also mails from roundcube are actually delivered to recepient but not marked as such.

Thunderbird error:
The message could not be sent because the connection to Outgoing server (SMTP) timed out.
corresponding log in /var/log/exim4/mainlog: no host name found for IP address

Rouncube error: Connetction Error (Failed to reach the server)!
console shows: HTTP/2 504 Gateway Timeout 30432ms
corresponding log in /var/log/exim4/mainlog :
2025-04-01 13:21:07 1tzYi4-000000005Pg-0uic malware acl condition: clamd /run/clamav/clamd.ctl : unable to read from socket (Connection timed out)
+

exim_log
exim_log1225×369 243 KB

(antivirus is uncheked for this mail domain)

kind of checked dns records, ports, hosts file, could it be the problem that I have no dns servers in Hestia, they are stored for now on a thirdparty hosting?

Could somebody advice what to do pls?

2

Hi @Greenracer

I’m a bit confused, you said you have problems to send mails but the screenshot shows a successful mail sent to gmail.

If you share the actual domain it would be easier to check.

Show the output of this command:

ping -c1 localhost

If none of your domains are using the antivirus, disable it (the ClamAV service and the use of CLAMD in the Exim4 configuration).

If configured correctly, no, there is no problem.

3

Thanks for your answer, your hints about dns and clamav inspired me for further analysis…

yes, it was actually clamd, by some reason not working properly unfortunately, should investigate why…
When I turned it off in mail domain options and commented in exim config + used snappymail instead of roundcube everything started to work ))
Thanks!!