port change for smtp?

[jechilt]

Recently, Southwesternbell DSL service has blocked port 25 for SMTP connection if customers use their own email servers. Therefore, all our customers being provided DSL service by SBC is now being blocked until they are registered.
Is it possible to alias an alternate port (like 26) for SMTP mail to get around the SBC firewall block on port 25?
Any suggestions would be helpful.

thanks!

 

[NVarra]

Just get Exim to listen on both ports 25 & 26, or whatever other port you'd like.

# vi /etc/exim.conf

Change

daemon_smtp_ports = 25

to

daemon_smtp_ports = 25 : 26

Then restart Exim.

 

[nobaloney]

John, don't forget to change your firewall to allow port 26 traffic.

Jeff

 

[modem]

I checked in my exim.conf file and found that exim is configured to send mail on ports 25 and 587 with the following line installed: daemon_smtp_ports = 25 : 587. Even when I telnet to port 587 it tells me Exim is accepting connections on that port. However when I sent an email to that port earlier this was the reply I got:

Subject: this is a test
Sent: 12/13/2006 11:02 PM

The following recipient(s) could not be reached:

'[email protected]' on 12/13/2006 11:02 PM
550 relay not permitted, authentication required


I take it exim still needs something else configured as well?

 

[nobaloney]

Exim has worked on port 587 since SpamBlocker exim.conf file version 2.

However it only works for authenticated senders.

Does your local system authenticate when it tries to send email? Either by plain-text password or by pop before smtp?

Jeff

 

[modem]

I used to have popb4smtp, although when I upgraded to dovecot I'm not sure if that affected it or not. Is there a way to tell for sure?

 

[modem]

I solved the issue. In outlook I had to chose the option "My SMTP Server Requires Auth" and then chose the suboption of "Same Auth settings as my incoming server". All works great.