development(_at_)crm20(_dot_)com writes:
Actually it's not about "authenticate/authorize" it's about earthlink
blocking port 25 for outgoing SMTP, which can be circumvented with using an
additional port on the server to listen to SMTP.
Given that nobody else has yet mentioned the additional port number, I
will: port 587 (submission service port) is designated for this. See
RFC 2476 ("Message Submission").
If you run sendmail, chances are you're already listening on port 587
as well as port 25. If not, add this line to /etc/mail/sendmail.cf:
O DaemonPortOptions=Port=587, Name=MSA, M=E
and restart sendmail.
The MSA DaemonPortOptions line usually goes right after the default
MTA DaemonPortOptions line.
--
Dick St.Peters, stpeters(_at_)NetHeaven(_dot_)com