[webmin-l] Usermin automatic reply not working

[Gilles C. <gil...@ec...>]

Automatic reply for Usermin v1.840 doesn't seem to work on our OpenSUSE Leap 15.3 Email-Server...

Quick question: is "procmail" required along with postfix to have automatic replies ?

I've tried / checked a few things:
When I create a new "Automatic Reply" it creates the ".forward" file in my $HOME directoy with content:
|/usr/bin/procmail

If the .forward file is present => no reply, and no email is received.

Also I checked in "Webmin" > Usermin Configuration > "Usermin module configuration" > "Configurable options for Mail Forwarding and Replies"
and "Allowed Forwarding types" everything is selected  (Autoreply etc.) and "Mail system installed" is set to "Sendmail".

I suspect something is missing, but I don't want to mess up my Dovecot / Postfix (with LMTP) setup, so I'm not sure if "procmail" required for Autoreply ?

cheers