----- Original Message -----
From: "Stuart D. Gathman" <stuart(_at_)bmsi(_dot_)com>
Don't bother to do a CBV here because even if you do call it, the remote
domain hosting somedomain.com must accept POSTMASTER always per
specification RFC 2821 secton 3.6:
Yes, of course. But what if they don't? Do you still want to
accept mail from such an RFC ignorant domain?
You and David are correct.
Our WCSAP does not do it though, and I guess that is because the CBV is the
last of total suite of other checks that do verify the domain. SPF for
example, I have to check but a NXDOMAIN creates a reject. But i have to
check this if that is how we have it implemented. Overall, the CBV is the
final action/test done before lower overhead items are done. It is not
someone we want to do for all transactions.
Nonetheless, the POSTMASTER is not a candidate for a CBV beyond the domain
check. Actually going into a CBV SMTP session would be a waste of time. That
was all the point I was making.
--
Hector Santos, Santronics Software, Inc.
http://www.santronics.com
-------
Sender Policy Framework: http://www.openspf.org/
Archives at http://archives.listbox.com/spf-discuss/current/
To unsubscribe, change your address, or temporarily deactivate your
subscription,
please go to
http://v2.listbox.com/member/?listname=spf-discuss(_at_)v2(_dot_)listbox(_dot_)com