How to open port 110 on SBS
Posted on 2008-11-06
I have a problem with POP3 connector and am desperate to get a solution fast.
Basically the POP3 connectors on SBS server no longer retrieve email from external mail server. There are a lot of errors in the event log. In order to get emails I have setup local POP3 account on Outlook for each user, and that has been working fine.
I did some basic test on the server and find that I cannot TELNET our mail server. I can ping the pop server and has internet access but just can't use TELNET. In general there is no respond after I type "Telnet pop_server 110"; I have tried BOTH name and IP address of the external pop server.
I am not able to test this on client laptop because it is a client. However, I know the mail server is up and running because they are getting emails via Outlook and I can telnet port 110 of their mail server from my office. So it seems that the server itself is blocking port110 traffic (users are getting email from Outlook so I can't see the problem is with the router).
Can anyone plase tell me how to test if port110 has been blocked on the server, and utimately how to reopen it? I have checked TCP/IP filter (single NIC) has not been enabled.
This is urgent. They have a couple of off site workers who use OWA, and that has stopped working.
Thanks in advance.