> I guess it's possible that PIX software might be munging the 220
> (unlikely), but I still see the connections in my maillog, so it's
> not intercepting the SMTP session.
I think it's entirely likely that the PIX is munging things - this
is the smtp-fixup "feature" of the PIX units.
You might try disabling that and seeing if things start working as
you intend.
Benny
--
"Now, that next spring you find in your garage a creature that
looks like a cross-bred badger and anaconda. A badgerconda."
-- bash.org