[kman42]

I have a campus email account that won't send email to a non-campus email account when I am connected over EDGE, but works fine when connected over wifi, either at home or on campus. Any ideas why this might be?

kman

[Cold Warrior]

maybe the IT system is set up to think AT&T is some kind of unauthorized access point. Your IT nerds might be able to tell you if there's a white or black list. dunno

[hemant]

It could be your "outgoing mail server" setting.

[kman42]

Why would it only effect sending of email over EDGE?

[CorpITGuy]

What I don't get is that it works on your home Wi-Fi. I could see it only working on campus if the SMTP server required authentication if you're outside of the campus network. I don't see why it would work on your home Wi-Fi and not on EDGE.

Conversely, you could use cwmx.com with no authentication and it would work fine on EDGE, but would not work on Wi-Fi.

You could try using your home ISP e-mail account's SMTP server, but then your e-mail would be, just like on cwmx.com, rejected by any domains that do RDNS lookups. While this is a dated and ridiculous practice, some IT Admins still do it because they don't know how to filter SPAM effectively.