SMTP won't work since installation of Aiport Extreme Base Station

[macngirltosh]

Hello!

I recently switched out my wireless router. I had a Netgear 802.11g wireless router, but got rid of it for an airport extreme base station with built in print server. Since I switched to the basestation, I can no longer send out email with my ISP's SMTP outgoing mail setting (it is a cable company/cable modem). If I hook up the older Netgear, it lets me send mail fine. Right now I have a regular wired Belkin router that is connected between my cable modem and my apple basestation (turned off distribute ip addresses), and it lets me send mail fine... but I really want to get rid of the Belkin and the Netgear all together, and just use my apple basestation. Please help! Thanks!

 

[peterparker]

That would mean that the Airport Extreme/Cable Modem combo is blocking outgoing traffic on port 25. I don't have an Airport Extreme to look at the configuration, but I can't image they would configure it this way by default. Have you shutdown the cable modem for several minutes? I've heard some have flakey behaviour that a reset helps.

 

[macngirltosh]

Tried powering off/on Cable modem

Yeah, I tried powering on/off Cable Modem but it didn't help. I am sure it is port mapping, but I am unsure how to do it exactly. Do I have to assign all my computers static ip's to do port mapping?

 

[peterparker]

I don't think any port mapping is needed. Can you try to telnet to port 25 of your ISP's SMTP server? You should see something like the following.

Trying 207.115.57.25...
Connected to smtpauth.sbcglobal.net.
Escape character is '^]'.
220 ylpvm53.prodigy.net ESMTP Sendmail 8.12.10 auth mps linux/8.12.10; Tue, 14 Jun 2005 23:07:25 -0400