Le 08/04/2020 à 12:42, Gerard E. Seibert a écrit : > postfix 3.6-20200316 > FreeBSD 11.3 p7 > OpenSSL 1.1.1f > > For several years, I was able to sent mail via Outlook. Suddenly, as of > yesterday, it fails. > > This is the log output from one attempt from postfix: > > Apr 8 05:33:46 scorpio postfix/smtp[73032]: Trusted TLS connection > established to smtp.office365.com[40.97.124.210]:587: TLSv1.2 with cipher > ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) > > Apr 8 05:33:46 scorpio postfix/smtp[73032]: 48xzc94xjxz5cMW: SASL > authentication failed; cannot authenticate to server > smtp.office365.com[40.97.124.210]: invalid parameter supplied > > I know this is not a postfix problem; however, I was wondering is > anyone had any ideas as to what might have suddenly happened. >
I got this problem sometime ago. It was due to a difference in the NTLM used by postfix (I think it comes from dovecot) and the one used by MS. Adding smtp_sasl_mechanism_filter = plain, login made things work again
