Can't find correct hostname for mail server

Question

I'm having trouble finding what I'm supposed to put in the "hostname" field for in- and outgoing e-mail. The e-mail I'm trying to set up is of the format "[email protected]". I have tried with "mail.ardal.skulenett.no" and "mx5.agnitio.no", which was the result I got from running a nslookup on the address (see exact output below). I'm pretty much stumped now, and was hoping someone here could give me some pointers on what to try next.
Microsoft Windows [Versjon 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. Med enerett.
C:\Users>nslookup
> set type=mx
> ardal.skulenett.no
Server:  ns1.ardalsnett.no
Address:  178.23.101.181
Ikke-autoritativt svar:
ardal.skulenett.no      MX preference = 5, mail exchanger = mx5.agnitio.no
ardal.skulenett.no      MX preference = 10, mail exchanger = mx3.agnitio.no
mx5.agnitio.no  internet address = 194.88.144.154
>
Message was edited by: eirikdaude (stupid forum not supporting code tags...)

Answer 1

You'll need to ask your email provider for their exact configuration. Server address, ports if different from default etc.
Each Email provider has their own configuration and only they now how it is set up.
Usually there is some kind of documentation outlining this.