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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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