James Hart [EMAIL PROTECTED] wrote:
> It just seemed like a
> simple thing for courier to be able to run a check up against the local
> users and aliases and be able to determine that it was an invalid local
> sender from the domain it courier reconizes as the ones it manages.
You could use a callback filter. This would cause your MTA to callback
itself and check whether the alleged sender address is valid.
Gordon Messmer's pythonfilter[1] offers a callback ("dialback") module.
My Perl-based Courier::Filter[2] currently doesn't offer a callback
module, but using the Mail::CheckUser[3] Perl module it should be trivial
to write one.
1.
http://phantom.dragonsdawn.net/~gordon/courier-patches/courier-pythonfilte
r/
2. http://search.cpan.org/dist/Courier-Filter/
3. http://search.cpan.org/dist/Mail-CheckUser/
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