Email Problem

[berk]

I'm having an email problem, my wife have groupwise mail for work, it worked flawlessly on her BB and now I have it set up on her evo through IMAP. When I set it up, incoming works fine, but when I do outgoing I can only get it to connect through wifi, when I'm on 3G it will not connect. I've tried everything but I can only send email when I'm on wifi, any help would be great.