Quoting "Paul G. Allen" <[EMAIL PROTECTED]>:
If you look at the header of my original post, you'll see that the originating IP of my laptop is 68.7.51.89. That is the IP allocated to my cable modem by Cox, and is within the 67.7.0.0/16 netblock. ANY server I use (unless it is re-writing headers) will have that IP somewhere in the mail header. A thorough spam filter will check all IPs in the header, and if that filter happens to be using the Spamhaus PBL, then it will block the e-mail.
IME, such filters on MTA will only do such checks against the server it is specifically talking to at the moment. If having any such IP anywhere in the header would break sending mail, I wouldn't have been able to do most of my email for my domain over the last few years. Or some domains in particular are just being way too paranoid and are breaking things for you.
About 2 years ago or so, even AOL started blocking all mail coming from my home box (my dad was mailing a friend) but as long as I relay it through my MX server that's a colo box (or was, now I have a slicehost slice) all the mails go through fine. I've yet to see a case of a mail blocked because a couple steps back, it was in a RR residential IP.
-- Mike Marion-Unix/Linux Admin-http://www.miguelito.org Frasier: "...we know for whom the bell tolls." [A bell dinging is heard, everyone looks around a little confused] Martin: "Anybody else hear that?" Daphne: "Oh! The biscuits!" --Fraiser -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
