Why won't iPad connect to my mail server?
I did originally fix this problem, but it has resurfaced.

I have written a great deal about this problem at my blog... (would paste directly, but pictures will not show up).

http://blog.williamhilsum.com/2010/11/ipad-update-and-more-problems-with-mail.html

The blog will show how I fixed the original problem, therefore is an answer, however, it also shows the new (related) problem.

If anyone has a good fix that will solve everything once and for all, please write another answer!