Problem! I can`t recive Mails!

[fefeboss]

Hello,im a newbie in linux...and i post here maybe someone can help me!

I install Zimbra Source on Rhel5 and i dont have a domain .com or another i get a domain free: fedot.no-ip.biz.
Now i configured it but i cant recive mails only send.I enter in Mta i configured it how i know but even configured i cant recive.
What To DO?

if someone know and read now i can give him Remote Desktop to help me

to not reply here join faster Yahoo! Mess: fefeboss

[mmorse]

Welcome to the forums,

Start here: Incoming Mail Problems - Zimbra :: Wiki

[fefeboss]

i think the problem is of MX record. what meen exactly MX record and how i can have it or how i can setup it