But when the open xchange webmail try the same (with an ip adress =
127.0.0.1) postfix try to authenticate with SASL.
NO! The CLIENT tries to authenticate and fails, and the CLIENT
disconnects. You need to configure the CLIENT to not attempt
authentication OR (better) fix the CLIENT's authentication credentials.
It might be helpful to tell postfix to not offer AUTH on localhost,
but I'm guessing the client will still disconnect until you
configure the client to not attempt AUTH.
http://www.postfix.org/postconf.5.html#smtpd_sasl_exceptions_networks
At any rate, the best course of action is to require webmail to AUTH
even though it's on localhost. Unfortunately, it's not unusual for
webmail systems to be compromised -- often through phishing -- and
the AUTH logging gives you a little more information about where the
breach is.
-- Noel Jones
You're right, webmail was issuing an AUTH smtp command and then
authentification failed.
I have fix my problem.
Many thanks for help.
Alain Deseine.
