From: DJ Lucas (djlucasit.com)
Date: Mon Apr 07 2008 - 02:20:40 CDT

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Hello all, I am new to this list, very sorry about the spam WRT the
subscription auth if it manages to get through.

I have a modification that I've not been able to track down an example
for. Maybe I'm not using the right search terms, IDK, but I've been
looking for a couple of days. I certainly hope that it's not in plain
sight someplace. Anyway, what I'm trying to accomplish is that messages
sent from anyuserany_hosted_domain.tld, and for
any_userany_hosted_domain.tld be denied if not authenticated via TLS.
I require my users to autheniticate to relay mail anyway.

I'm not even sure with which directive to accomplish this. Sender
address verification is close, but this doesn't kill the connection if
they use a legitimate address...at least if I understand the process
correctly. Not to mention that I'd have to edit the flat file and
rehash it each time a virtual domain is added.

My personal mail server is setup very similar to the one this change is
required for, and can happily be a test bed for any suggestions that
haven't been proven in the wild. Though the directory is very
different, the setup is kind of similar to the old Jamm/Pham setups that
are floating around as that is where I started with virtual users a few
years ago. In fact, it even started with Phamm, then my requirements
changed. Anyway, the latest and greatest stable software versions are
installed...postfix-2.5.1, dovecot-1.0.13 (only mentioned because
dovecot sasl is used for smtpd and this is easier given it had to be
configured already), openldap-2.3.39. Just yell if I missed anything
important or if you need any additional configuration information.

Thanks in advance.

-- DJ Lucas

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