I've been using my GoDaddy email with my tour for about a year now - there was one sporadic issue a few months ago (that GoDaddy discovered and fixed within a day) but other than that things have been working fine.
About a week ago, I noticed that many of my messages were not being delivered to my BB. There was no consistency - some were coming through, some weren't. All were being delivered to my GoDaddy account but once again, only a few would come through to the BB. There was often a 15 minute delay on incoming messages as well (in the past it would always show immediately).
Also, on outgoing messages, some of them would appear with a red 'X', I would choose resend and it would go through. Not all of them would have to go through the resend process but only a few of them. In other words, there was no consistency here either.
GoDaddy support says they are not aware of any issues. I tried deleting my email account, setting up new, resending service books, rebooting BB etc....
I also use GoDaddy for my email and I had problems with sending emails from my Tour last week.
The sending issue lasted a day or two but it hasn't happened since.....