> I'm on Comcast and am having no problems. I set the smarthost for > sendmail to "smtp.comcast.net" and, at least so far, have not triggered > anything that would block incoming or outgoing mail. All mail from me > goes through the "official" comcast mail server and does not appear to > come from a dynamic address.
If you use smtp.comcast.net as outgoing I doubt you even need reverse DNS on your IP. Just be sure you update your SPF record to include smtp.comcast.net or something. Everyone has an SPF record, right? Matt
