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cisco firewall/email

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by cnaes

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I recently had the problem of users at my company could not send email to people at ceeus.com. It turned out that our cisco firewall was not allowing it through (note: Cisco 1720 version 12.2). When I removed "ip inspect name FastEthernet_0 smtp" from the firewall it then let us send email to this company. We also have noticed that we cannot email employees at kiamichielectric.com. I am able to telnet to their mailserver and they are able to email us. My question is, (assuming the problem is on our end) is there a way on the router to grant specific access to connect to this company (in case I am missing something in the router/firewall config that is denying it)? Thanks for your help in advance.

4 replies

by rgrowcock

One way, and it's not a very secure way of doing things, is to allow smtp traffic. By granting access to port 25 or smtp in an extended ACL, all smtp traffic would be allowed. Or you could just add those statements for the companies you wish, provided you know their smtp and pop3 server IPs.
Same if you added port 110 or Pop3 traffic.

Just remember that there is a implicit "deny all" at the end of ACL, unless you end your ACL with "permit any." Hope this helps. Roger

by cnaes

correction we are trying to email users at kiamichielectric.org, not .com.

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