Hi all, I set up a box with fedora core 1 and it's up and running for the most part.

My problem is with mail. My client machine is Windows XP/outlook.

POP3 is set to port 110
SMTP is set to port 25

When I try to connect to the redhat box I get:

"Log onto incoming mail server (POP3): Outlook could not connect to the incoming mail server (POP3). The problem could be your SSL or port settings for the incoming mail server. Verify your port and SSL settings under More Settings on the Advanced tab."

Looking in var/log/maillog I'm seeing this:

Aug 24 09:05:40 newsletter sendmail[3008]: i7OG5dY6003007: to=<me@xxx.domain.com>, ctladdr=<me@xxx.domain.com> (503/503), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30773, dsn=2.0.0, stat=Sent

How do I check/set ports in linux? Is there something simple I'm missing?

I'm pretty new at linux so I'm at a loss. Any help would be greatly appreciated. Thanks folks

The command to check ports is 'netstat'. To see the active TCP ports on the machine:

netstat -tl

This will not tell you if a port is being blocked by a firewall.

There are two POP services for Fedora, and they are configured differently. The default is 'dovecot', which is just a regular service.

If you are setting up an SMTP server for a network I would suggest that you replace sendmail with postfix - sendmail is still the most common, but beyond that I wouldn't say anything nice about it. Fedora includes a postfix package and a 'switch-mail' utility to make the swap.