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: Trusted TLS connection established to smtp.office365.com[188.8.131.52]:587: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
> Apr 8 05:33:46 scorpio postfix/smtp: 48xzc94xjxz5cMW: SASL authentication failed; cannot authenticate to server smtp.office365.com[184.108.40.206]: 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.
smtp_sasl_mechanism_filter = plain, login
made things work again