victor duchovni dxdewmdieulnutmorganstanleycom fri feb 08 2008 040404pm 0530 goutam baul wrote implemented sasl authetication trend micro net suit used anti spamanti virus software since last days finding users total 900 users 3 reported issue far able send mail address outside domain log entry getting something like feb 8 155429 mail postfixsmtpd9334 noqueue reject rcpt unknown5918354228 554 recipient address rejected access denied protosmtp helo user actually authenticate indications server allows authentication mean users correctly configure mail clients use viktor disclaimer offlist followups get onlist replies get ignored please ignore replyto header unsubscribe postfixusers list visit httpwwwpostfixorglistshtml click link response solves problem best way thank send worked thanks followup must respond please put worked thanks subject delete quickly tue 05 aug 2008 185320 0500 mail sending problem