Port 25 Blocked?

Warning! Linux jargon ahead!

My Internet just recently switched to AT&T U-verse, and I’m not hugely impressed one way or the other. It feels a bit more glitchy than before, but maybe that’s just the AT&T-provided wireless router. I don’t really know. (Is anyone having problems viewing this site? Not that there are that many people viewing the site at all.)

But the part I was most worried about was the fact that outgoing traffic on port 25 was blocked.

Port 25, for those of you who don’t know, is the TCP port used to transfer e-mail. There is the…