Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

827 Router Can not send E-Mail to SMTP Server

Hi All

This is the first time I have tried seting up a router. The problem is that my customer can go on the internet and get e-mail from a outside pop3 server but cannot send mail to a outside SMTP server. Can anyone give me an clue as to were to start looking for the problem.

Thanks

John

3 REPLIES
New Member

Re: 827 Router Can not send E-Mail to SMTP Server

Since SMTP is TCP port 25, try looks if any access-list for port 25.

New Member

Re: 827 Router Can not send E-Mail to SMTP Server

Thanks for the input.

Like I said I am new to this . How do you do that. I have the set up doc. I am not sure on how to do it. Sorry if I am being basic. I guess you have to start some where.

Thanks

John

New Member

Re: 827 Router Can not send E-Mail to SMTP Server

Hi John,

The problem could may also be the ISP has blocked the SMTP port from unknown IP addresses. This is to prevent SPAMing. Is the DSL coming from an ISP and you are trying to use the SMTP server of another?

Check your access-list with a "show running-config" to see if there is any like this:

access-list xxx deny tcp any any eq smtp

Regards,

Ron

142
Views
0
Helpful
3
Replies
CreatePlease login to create content