where can I find a documentation of the control file. I currently know
only that tags which are implemented in pythonfilter. I'm specially
searching for a way to detect the mails which are sent via smtp auth,
as I want to whitelist them.
Regarding how to determine the auth status from the messages'
"Received:" header, you could take a look at the ... function in the
Courier::Message Perl module, which is part of Courier::Filter.
Doh. I meant to say "take a look at the authenticated() function".