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Re: AOL rejecting mail from IP's w/o reverse DNS ?
Christopher X. Candreva writes on 12/3/2003 10:13 AM:
They have had this policy since several months now but it is still a "may" - and does give them a good excuse to take out large IP blocks that don't have proper reverse DNS assigned and emit a lot of spam.Since I'm 99% sure the idea (or stupidity thereof :-) of blocking SMTP servers without reverse DNS came up here in this discussion, I just ran a manual queue run to clean out a queue, and saw this come up:
More at http://postmaster.info.aol.com
If this is what it takes to push more people to get valid PTR records on their mailservers ...
Lots of mailservers (such as the one for freebsd.org) already do this.I don't know if this is new -- I don't recall seeing it before, but it doesn't say they WILL refuse, just they may. If they do start blocking -- this WILL be an operational issue.
I have not seen any large ISP other than AOL do this yet, though. However if they make it a "must" rather than a "may", I can see a whole lot of ISPs who will be quite eager to follow suit and do something on the same lines.
srs (postmaster|suresh)@outblaze.com // gpg : EDEDEFB9
manager, outblaze.com security and antispam operations