• Debian 11 has reached its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.81 is the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

smart host

In case of Qmail MTA you can configure a smarthost in Plesk by editing following file:

/var/qmail/control/smtproutes

The syntax is:

<domainname>:<smart host>

Note: You have to disable the local e-mail in Plesk.
 
When will this be finally available in the GUI for mailserver settings?
Same goes for authentication and settings.

There is an extension already existing for smarthost settings, but it ain't working for custom servers.
I tried to edit the extension but for some reason I cannot import the extension as plesk has an issue with it.

MailChannels SMTP Relay - Plesk Extensions
 
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