ICANN opens up Pandora's Box of new TLDs
tme at multicasttech.com
Sat Jun 28 08:48:01 CDT 2008
On Jun 28, 2008, at 6:48 AM, Rich Kulawiec wrote:
> On Fri, Jun 27, 2008 at 01:40:03PM -0700, David Conrad wrote:
>> On Jun 27, 2008, at 5:22 AM, Alexander Harrowell wrote:
>>> Well, at least the new TLDs will promote DNS-based cruft filtration.
>>> You can
>>> already safely ignore anything with a .name, .biz, .info, .tv
>>> name just the worst.
>> Does this actually work? The vast majority of spam I receive has an
>> origin that doesn't reverse map.
> Best practice is refuse all mail that comes from any host lacking
> since that host doesn't meet the minimum requirements for a mail
> After that, other sanity checks (such as matching forward DNS, valid
> proper wait for SMTP greeting, etc.) also knock out a good chunk of
> 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.
> Beyond that, blocking of various gTLDs and ccTLDs and network
> works nicely, depending on what your particular mix of inbound spam/
> is. Understanding of your own inbound mail mix is crucial to deciding
> which ones are viable for your operation. Locally, I've had .cn
> and .kr
> along with their entire network allocations blacklisted for years, and
> this has worked nicely; but clearly it wouldn't work well for, say,
> a major US research university.
> Locally, .name, .info and .tv are permanently blacklisted, and I
> 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.
Hmm. Looking at the recent spam collection plus email archive for the
accounts I host for
SPAM (recent messages only)
13864 messages - 57 from .info rate = 0.4 %
13864 messages - 8761 from .com rate = 63.1 %
Non-SPAM (going back ~ two years)
122846 messages - 607 from .info - rate = 0.5 %
122846 messages - 71888 from .com - rate = 58.5 %
I don't see any strong reason to drop .info traffic here.
Note, btw, that at least Joe Abley, Andrew Sullivan and Brian Dickson
post to NANOG repeatedly from .info
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