Can't send emails from certain locations
I take my MacBook Air to school with me and I stay there all day. I will receive a few emails throughout the day most of which I don't need to respond to right away. Occasionally, however I will want to send out an e-mail or reply to one. When I am at school and connected to the schools WiFi I cannot send emails using Mail.app. Also, I can't send them with my iPhone.
My usual workaround is to wait until I get home in the evening or switch my iPhone to 3G and compose and send my e-mail over 3G. I can also send e-mail if I log into iCloud (or MM when I used that) to send via the web app.
I have tried to contact the school's IT and they simply don't respond. That is a dead end, sadly pathetically.
I know there must be a solution that I can't figure out. I have only ever heard of one other person having this problem at school so I think that the problem lies within my settings. That or everyone uses web-based e-mail (unlikely). I have seen an official release from Apple sort of addressing this with some solutions but I can't find it anymore.
Any and all help is greatly appreciated
MacBook Air
10.7.2
Apple Mail.app
WiFi
MacBook Air, Mac OS X (10.7)