E-mail problems COmcast & Aol accounts

[melanogastr]

Our office mail server ( which is hosted by bluehost) cannot send emails to comcast or aol accounts. From what I understand, it is because our IP lacks a Reverse DNS entry and so Comcast and AOL consider emails from our accounts as SPAM. Can anyone help me resolve this matter?

[Early Out]

All the BH mail servers have proper reverse DNS entries. That's not why they occasionally get blacklisted. Here's what happens.... Someone has email at BH. Instead of retrieving that email directly from the BH servers, they have all the messages forwarded to their ISP (like Comcast or AOL). No spam filtering occurs before the messages are forwarded. So, along with all the legitimate mail, Comcast/AOL also receives a ton of spam. They look at where it's coming from, and it's coming from a BH mail server. So, they blacklist the BH mail server.

Why don't Comcast and AOL look further, to the real source of the spam? Why should they have to expend their processing time to do that? And besides, so much spam has forged headers, they'd never be able to figure out where it was really coming from, anyway.

I don't know what the ultimate solution to this problem is. BH has very stringent controls on outgoing email, precisely to avoid having this happen, but those controls don't apply to forwarded messages. If it were up to me, I'd simply disable all email forwarding. If you want to use a BH email address, then you have to come pick up your mail, either with webmail (ugh) or with an email client program. That would solve the problem completely.

[melanogastr]

Thanks for the input.