Using Outlook 2007 on Vista Home Premium. Norton Internet Security 2009.
I've configured a POP3 server with an external IP, running on ports 110 (inbound) and 25 (outbound).
When I'm not behind a proxy, Outlook works fine.
So the problem isn't with Norton, or the Windows Firewall.
When I'm behind a proxy, and I configure my IE settings with the proxy server settings, Outlooks fails to send/receive emails with the error message:
Task '<<account>> - Receiving' reported error (0x80042108) : 'Outlook cannot connect to your incoming (POP3) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'
I tried telnet <<mail server EXTERNAL IP>> 110, and it showed:
Connecting To EXTERNAL IP...Could not open connection to the host, on port 110: Connect failed
I tried telnet <<mail server INTERNAL IP>> 110, and I was able to connect:
+OK <<Server name>> POP3 server ready
The questions are:
1. What could the problem be?, and
2. What do I need to tell my sysadmin to do to the proxy to make this work?
Thanks in advance.
