• The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

Resolved Cannot recieve Emails / forward Emails

Do you have any related error messages in Plesk maillog?
 
connect to gmail-smtp-in.l.google.com[2a00:1450:400c:c06::1a]:25: Network is unreachable
This means your server is trying to connect to the Google SMTP via IPv6 protocol. This doesn't work as your network probably doesn't support IPv6.
To get rid of the error message, you can configure Postfix not to use IPv6 by editing your /etc/postfix/main.cf with this directive:

inet_protocols = ipv4

Then restart postfix:

/etc/init.d/postfix restart
 
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