michaelof--- via Postfix-users: > 2024-02-22T17:49:57.074140+01:00 vserver postfix/smtps/smtpd[165894]: connect > from <FAILED: sender-dns-name[IPv4]> > 2024-02-22T17:49:57.177663+01:00 vserver postfix/smtps/smtpd[165894]: > warning: <FAILED: sender-dns-name[IPv4]> : SASL LOGIN authentication failed: > Invalid authentication mechanism
Your smtpd_sasl_security_options setting appears to allow plaintext mechanisms: > -o smtpd_sasl_security_options=noanonymous But with TLS turned on, Postfix is supposed to use smtpd_sasl_tls_security_options. The default setting is smtpd_sasl_tls_security_options = $smtpd_sasl_security_options which would allow plaintext mechanisms, with y9our smtpd_sasl_security_options=noanonymous setting. What could be wrong: 1) You nay have smtpd_sasl_tls_security_options in main.cf 2) Your SASL backend may not support the LOGIN plaintext mechanism. 3) You may have an smtpd_sasl_mechanism_filter setting that does not allow "login". The default seting is smtpd_sasl_mechanism_filter = !external, static:rest which allows all mechanisms except 'external'. Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org