mattias escribío: > Are smtp auth enabled as default in postfix in fedora? > One gotcha (at least for me) is to make sure you tell what kind of auth you need to reply to (for example): smtp_sasl_mechanism_filter = plain, login For what it is worth, this is all that I have to authenticate to the upstream isp: smtp_sasl_auth_enforce = yes smtp_sasl_security_options = smtp_sasl_auth_enable = yes smtp_sasl_security_options = smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_mechanism_filter = plain, login broken_sasl_auth_clients = yes Then make sure that the sasl_passwd is correct and made into a correct db file. -- Brian Millett - [ Sheridan, "Points of Departure"] "It's amazing what two years on the rim can do to you."