nanog mailing list archives

Re: ICANN opens up Pandora's Box of new TLDs


From: Phil Regnauld <regnauld () catpipe net>
Date: Sat, 28 Jun 2008 13:56:53 +0200

Rich Kulawiec (rsk) writes:

Best practice is refuse all mail that comes from any host lacking rDNS,
since that host doesn't meet the minimum requirements for a mail server.

        No, that's utterly stupid.  You're excluding countries which have
        poor infrastructure or clueless ISPs (usually legacy telco operators)
        who can't be bothered to administrate IN-ADDR.ARPA delegations for
        their customers.  It doesn't help, and only encourages people in
        these countries to go for @{hotmail|yahoo|gmail}.  Millions of botnet
        PCs have valid reverses.

Yes, some of these also impact non-spamming but broken mail servers,
however, this is usually the only way to get the attention of their
operators and persuade them to effect repairs.

        You're kidding, right ?  They don't give a rat's ass.

Locally, .name, .info and .tv are permanently blacklisted, and I recommend
this to others: they're all heavily spammer-infested.  .biz is not
blacklisted at the moment, largely because it's been so badly ravaged
that spammers *appear* to be abandoning it.

        "Bomb the bridge, salt the earth" approach ?


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