On Fri, Apr 17, 2026 at 02:50:55PM +0200, Tommy Berglund via Postfix-users wrote:
> email postfix/submission/smtpd connect from unknown[192.168.1.44] > email postfix/submission/smtpd: warning: SASL authentication failure: > Password verification failed > email postfix/submission/smtpd: warning: unknown[192.168.1.44]: SASL > PLAIN authentication failed: authentication failure, > [email protected] See <https://www.postfix.org/SASL_README.html>. Is that a valid username? How is it associated with a password the server can check... > submission inet n - y - - smtpd > -o syslog_name=postfix/submission > -o smtpd_tls_security_level=encrypt > -o smtpd_sasl_auth_enable=yes > -o smtpd_reject_unlisted_recipient=no > -o smtpd_recipient_restrictions=permit_sasl_authenticated,reject SASL is required, but needs to be configured correctly, in particular needs to have a working backend for password validation. > cyrus_sasl_config_path = /etc/postfix/sasl That seems to be the only SASL configuration parameter related to the Postfix SMTP server (smtpd(8)), likely you need to be more specific. Some relevant defaults, and you probably need to put something useful in the server "smtpd.conf" file (probably under /etc/postfix/sasl/). smtpd_sasl_local_domain = smtpd_sasl_mechanism_filter = !external, static:rest smtpd_sasl_path = smtpd smtpd_sasl_type = cyrus smtpd_tls_auth_only = no -- Viktor. 🇺🇦 Слава Україні! _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
