[CentOS] Problem accessing my webmail

[Christopher Chan]

Jun Salen wrote:
> Hi,
> 
> I just finished replacing my mail server with the new one from CentOS 4.6 to CentOS 5.1. The mail are running smoothly with user able to send/receive mail from Outlook using IMAP or POP3 and Webmail locally. My problem is that when I am outside my network like in home, I cannot able to access the Webmail. In my prior mail server, it is ok. Is there anybody here have clues for me to look for? DNSReport states that my mail server was accessable. Please help. Thanks in advance for your help.
>  

Firewall? What have you done to try and find out what the problem is?