Already done ;-) I did a test after the removal of the credentials, just to show that without that, the connection failed.
The issue is more with Apr 12 16:27:58 <server> postfix/smtp[22637]: setting up TLS connection to pod51013.outlook.com[157.55.9.168]:587 Apr 12 16:27:58 <server> postfix/smtp[22637]: Trusted TLS connection established to pod51013.outlook.com[157.55.9.168]:587: TLSv1 with cipher AES128-SHA (128/128 bits) Apr 12 16:27:58 <server> postfix/smtp[22637]: Trusted TLS connection established to pod51013.outlook.com[157.55.9.168]:587: TLSv1 with cipher AES128-SHA (128/128 bits) Apr 12 16:27:58 <server> postfix/smtp[22637]: 177401EEA: to=<mahe@domain>, relay=pod51013.outlook.com[157.55.9.168]:587, delay=0.31, delays=0.06/0.02/0.22/0, dsn=4.7.0, status=deferred (SASL authentication failed; cannot authenticate to server pod51013.outlook.com[157.55.9.168]: no mechanism available) Franck ------------------------------------------- M: +33 6 6042 7249 E: m...@civis.net -----Message d'origine----- De : owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] De la part de Wietse Venema Envoyé : jeudi 12 avril 2012 16:23 À : Franck MAHE Cc : postfix-users@postfix.org Objet : Re: SMTP Client and AUTH on *.outlook.com (Office 365) Franck MAHE: > Apr 12 16:08:35 <server> postfix/pickup[11812]: 6C9C122F8: uid=0 from=<root> > Apr 12 16:08:35 <server> postfix/cleanup[19570]: 6C9C122F8: > message-id=<20120412140835.6C9C122F8@domain> > Apr 12 16:08:35 <server> postfix/qmgr[11813]: 6C9C122F8: from=<root@domain>, > size=419, nrcpt=1 (queue active) > Apr 12 16:08:35 <server> postfix/smtp[19572]: setting up TLS connection to > pod51013.outlook.com[157.55.9.168]:587 > Apr 12 16:08:35 <server> postfix/smtp[19572]: Trusted TLS connection > established to pod51013.outlook.com[157.55.9.168]:587: TLSv1 with cipher > AES128-SHA (128/128 bits) > Apr 12 16:08:40 <server> postfix/smtp[19572]: 6C9C122F8: to=<mahe@domain>, > relay=pod51013.outlook.com[157.55.9.168]:587, delay=5.3, > delays=0.06/0.03/0.21/5, dsn=5.7.1, status=bounced (host > pod51013.outlook.com[157.55.9.168] said: 530 5.7.1 Client was not > authenticated (in reply to MAIL FROM command)) > > How to force an authent mechanism for a specific smtp server? For this, you need to turn on SASL authentication in the Postfix SMTP client. http://www.postfix.org/SASL_README.html#client_sasl Wietse