[technothrasher]

> The only large exception is microsoft.

Comcast also gives me no end of annoyance by repeatedly black-listing my server for no apparent reason. The process goes: get blocked, request reason, get a hand shrug and unblock, rinse and repeat.

[micw]

There should be a blocklist for MTAs that blocks others for no reason and all "free" MTA should use these to put a little pressure on those.