REVDNS -10 ENDSWITH 1.comcast.net REVDNS -10 ENDSWITH 2.comcast.net REVDNS -10 ENDSWITH 3.comcast.net REVDNS -10 ENDSWITH 4.comcast.net REVDNS -10 ENDSWITH 5.comcast.net REVDNS -10 ENDSWITH 6.comcast.net REVDNS -10 ENDSWITH 7.comcast.net REVDNS -10 ENDSWITH 8.comcast.net REVDNS -10 ENDSWITH 9.comcast.net REVDNS -10 ENDSWITH 0.comcast.net
If they keep the naming convention that you pointed out, that should work. I wouldn't take away too much weight though just in case.
Matt
Colbeck, Andrew wrote:
I'm seeing some false positives for mail from .comcast.net hosts that are falling into various ip4r lists. It's very sporadic. It seems like quite a few are being "tested" as mail relay hosts, but aren't.
Other providers provide a sensible naming convention to make it straightforward to identify what server is really a comcast.net server as opposed to just some server on their network, but these guys are fond of host names like:
rwcrmhc12.comcast.net [216.148.227.85] sccrmhc11.comcast.net [204.127.202.55]
... Or is it as simple as .comcast.net only appears in their valid hosts? I dunno.
Is there a clue in the business relationship between AT&T and Comcast? I dunno.
Andrew 8(
(I just wasted too much time checking for false positives... I found a very few but the time involved made it an expensive proposition) --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]
--- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
-- =================================================== Matthew S. Bramble President and Technical Coordinator iGaia Incorporated, Operator of NYcars.com --------------------------------------------------- Office Phone: (518) 862-9042 Fax: (518) 862-9044 E-mail: [EMAIL PROTECTED] or [EMAIL PROTECTED] ===================================================
--- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]
--- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
