Email Problems using webmail

[cssystems]

Hi, for some reason when i use webmail in cpanel i cant send to any other domain apart from a .co.uk it bounces back with

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

*********@supanet.com
unrouteable mail domain "supanet.com"

It also does it with hotmail and any other domain that isnt a .co.uk

this was working up untill a few days ago... any ideas????

[cssystems]

I have had this post open for a number of days now, and no one has posted a reply, i guess no one actually knows, and no one can help me !!

[bijo]

I have had this post open for a number of days now, and no one has posted a reply, i guess no one actually knows, and no one can help me !!

Hello,

It could be the issue with your DNS. Did you check the exim_mainlog, maillog, messages. It will help you to find out the issue. I think, your dns is not resolving, request to the localhost. Check your named.conf file and also run the following command "dig hotmail.com @localhost"