Uttered David Woodhouse <dwmw2(a)infradead.org>, spake thus:
Blocking access to port 25 isn't such a bad plan in the grand
scheme of
things. What's the actual problem -- just that their servers are very
slow to pass mail through? You could use an external mail server
listening on a port other than 25, surely?
Agreed: filtering port 25 is an acceptable part of an over-all
security scheme. Unfortunately, BellSouth appear to never have heard
of authentication, certificates, and the like.
Tunneling could work if there were someone on the other end. Wanna
volunteer?
Cheers