• 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.

Resolving "451 Could not complete sender verify callout" errors

W

whitecurve

Guest
It seems that some exim mail servers implement sender verify callout and when my clients send mails to users on these servers the mails do not reach them.


They instead get a bounce back informing them
Remote host said: 451 Could not complete sender verify callout

Does any know how to resolve this on a plesk 8.+ server...?
 
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