I have followed the guides on setting up postfix relay to my account at network solutions.
I added these to main.cf:
inet_interfaces = localhost
relayhost = [mail.mydomain.com]:587
smtp_sasl_auth_enable = yes smtp_sasl_security_options = noanonymous smtp_sasl_password_maps = hash:/etc/postfix/sasl_password smtp_use_tls = yes smtp_tls_CAfile = /etc/pki/tls/certs/sendmail.pem
The username and password are correct, and all these options work fine from thunderbird on a windows box in my local network.
I get no errors on postfix restart, but when I try to send an email from the centos box, I get this:
Apr 26 17:00:33 host postfix/smtp[10627]: C9C1D80075: to=campbell@somedomain.com, relay=mail.mydomain.com[xxx.xxx.xxx.xxx]:587, delay=0.87, delays=0.08/0.02/0.72/0.04, dsn=5.0.0, status=bounced (host mail.mydomain.com[xxx.xxx.xxx.xxx] said: 503 you must authenticate first (#5.5.1) (in reply to MAIL FROM command))
Why is tls not authenticating?
Under centos 5 I used sendmail, and it all worked just fine.
-chuck