POP Mail Delay

[Johnathon - East Coast Computers]

I hope I have subscribe to the correct list, if not I apologize for this email.

I am setting up a new email server using Linux Mandrake 9.0 and IMAP-2001A-9MDK which I believe is UW-IMAP. I have been having a 15-20 second delay from the time I pop may mail to the time the server sends the mail. Here is my senario:

I have a machine running MD 9.0, Postfix, and IMAP-2001A which takes care of my IMAP and POP needs. My network consists of 1 public class A IP address: 64.83.48.210, which is fed into my router. My private IP range is 192.168.... I have TCP/IP ports 80, 25, 110 and 143 port forwarded to my new server (192.168.1.55) On a different machine on my internal network I have a mail client set up for pop. I used 192.168.1.55 for both the pop server and smtp server settings. No delay sending or receiving. When I change the pop and smtp settings to:
mail.eastcoast-pc.com, no problem sending but receiving take approx 15-30 seconds delay and then it give my mail client mail or nothing respectively... Seems like something is timing out.
Someone told me that DNS maybe causing the delay. If so, what do I need to do to get this fixed? Thanks for the help everyone.

Thanks,

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Johnathon B. Allread
A+, MCP, MCSA, Linux User
East Coast Computers
1902 Colley Ave
Norfolk, VA 23517-1613
http://www.eastcoast-pc.com
Shop - (757) 313-7582
Fax - (757) 313-7587
Cell - (757) 235-5629


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