• The APS Catalog has been deprecated and removed from all Plesk Obsidian versions.
    Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
  • Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.

Issue Emails sent to host rejected (550)

R

Rafael Mota

New Pleskian
Hi. All emails sent to my host managed by plesk suddenly are rejected. This is a sample message

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain tropicinvoice.com by mail.tropicinvoice.com. [138.128.173.42].

The error that the other server returned was:
550 This mail server requires authentication (1) when attempting to send via this SMTP (submission) port.

--------------
This happens with every mail provider I try today. Was working fine. I didnt touch anything.
 
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