I have a domain with MX now, how to use it ?

[JOYDEEP]

dear list,

I have a domain where I can configure MX record :-)
Say it is example.com
I have 2 question here.

1)  what should be the entries in /etc/imapd.conf  file to receive mail
via example.com to user at hosteurope.de

2)  what should be the MX record of example.com
----
Cyrus Home Page: http://cyrusimap.web.cmu.edu/
Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html