A couple of questions. Looking in the postfix generated Received: header, the
SMTP id often has a few other letters included: ESMTPA etc. I am guessing
that the extra letters mean:
E - EHLO used rather the HELO
S - SSL was used in the connection
A - the originator was authenticated
Are there any others and how close am I?
When the alias file pipes an email to a program, does it expect any response
from that program, or would it do anything with a response?
Thanks,
-- Doug
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