Resolved Email not arriving

[Cyberwhoop]

Hi,

New here and hopefully someone at the forum can assist.

I do have an issue after Plesk update, email send to domains at server is not arriving / bounces.

Gmail send to own domain at server does not arrive Gmail supplies this error:
Diagnostic-Code: smtp; The recipient server did not accept our requests to connect. Learn more at Fix bounced or rejected emails - Gmail Help

Email is also not vissible in webmail (empty mailbox) so nothing does arrive.

Any idea where to start? Email did work fine until +/- 17th of July.

Plesk Onyx
Version 17.5.3 Update #15, last updated on July 28, 2017 04:19 AM
Running at Strato, Vitual Linux Server

Cheers
Marco

 

[eilko]

is the postfix mailservice still running?
aren't you blocking port 25?
something in the logs, like /var/log/maillog?

 

[TomBoB]

Hi,

The recipient server did not accept our requests to connect

Check your firewall. Is port 25 blocked?
An outside test from checktls.com should help pinpoint the issue.

Cheers,
Tom

 

[Cyberwhoop]

Thanks for the replies, I did find a solution in the knowledge base that worked...
In Plesk: home => tools & settings => service SMTP Server (Postfix)
Switched on that service and emails started to arrive
Maybe it was automatically switched off after the update, no clue but back on track now!