How to config 1841 router inbound to exchange server

zhijun-guo · ‎08-30-2006

Who can tell me why my configuration does not work.

scheikhnajib · ‎09-01-2006

Hi Mate,

The access list that you have is wrong, you have:

access-list 101 permit tcp any eq www host 72.0.207.228 eq www

access-list 101 permit tcp any eq smtp host 72.0.207.228 eq smtp

access-list 101 permit tcp any eq pop3 host 72.0.207.228 eq pop3

It should be:

access-list 101 permit tcp any host 72.0.207.228 eq www

access-list 101 permit tcp any host 72.0.207.228 eq smtp

access-list 101 permit tcp any host 72.0.207.228 eq pop3

You should not specify the source TCP port because it will be a random port over 1024, so you have to allow all of them by not mentioning any.

Another recommendation is: Don't keep your usernames, passwords or IP addresses when you post any config file in the forum ;-)

Hope this helps.

Salem.

zhijun-guo · ‎09-01-2006

Thank you scheikhnajib, further more I found that actually the access-list 101 does not make any sense,all the traffic can access to my outside interface 72.0.207.228. Also when I telnet to my outside interface from internet, I successfully telnet to port 80 and 110(it means I received response from exchange server). but I failed to telnet to 72.0.207.228 25..Anyway I found that I can send and receive email from my exchange server. But when I access my exchange server via OWA(Outlook Web Access)from Internet it failed. I don't know why???