Hi, DNS is propogated, I can send email from the server, but WPMU e-mail just doesnt arrive at the destination.
I've checked the mail queue, and the emails are there.
I manually try and send the e-Mail, and receive the following error:
R=lookuphost defer (-1): host lookup did not complete
Hmm, I've got technical support looking at the server to make sure that it's all set up correct
Ok, for those that may be receiving the same error as me, you can add your server's IP as a resolver and it gets round the issue - and it all works now :)
Did that or (Sounds like you're running) exim can't find the nameservers.