[105679] in North American Network Operators' Group
Re: Mail Server best practices - was: Pandora's Box of new TLDs
daemon@ATHENA.MIT.EDU (Chris Owen)
Sat Jun 28 18:25:27 2008
From: Chris Owen <owenc@hubris.net>
To: nanog <nanog@merit.edu>
In-Reply-To: <4866B387.2070900@vaxination.ca>
Date: Sat, 28 Jun 2008 17:25:16 -0500
Errors-To: nanog-bounces@nanog.org
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On Jun 28, 2008, at 4:56 PM, Jean-Fran=E7ois Mezei wrote:
> The biggest problem however are outfits like microsoft whose hotmail/=20=
> msn
> properties have undocumented logic which confirm reception of the
> message at the SMTP/821 level but then proceed to discard the email
> instead of delivering it to the person's inbox (or spam folder).
At some point what is the difference between putting the mail into a =20
spam folder and sending them to /dev/null?
Yesterday I received 4,932 emails. 294 of those went into my inbox. =20=
36 of those went info my quarantine folder. The other 4,602 went =20
straight to /dev/null (actually many of them went through various =20
blacklist building scripts first). Had I put the full 4,638 into a =20
"spam folder" that would have been completely worthless. It would be =20=
impossible for me to actually review all those emails. Ultimately, =20
there wouldn't be any difference between that and /dev/null. The only =20=
difference is I would have deleted them later rather than when they =20
came in.
So should I have bounced all 4,602? Since ninety some percent of them =20=
came from forged addresses that would not only be pointless but would =20=
be contributing to the problem (and get us into bl.spamcop.com).
The size of the problem presented by spam is just enormous. Before we =20=
started selective greylisting, we used to accept a million messages a =20=
day. Of those we only delivered about 50,000. And that's for a =20
system only handling about 5,000 email accounts. I can't even imagine =20=
having to do that on the scale hotmail is talking about.
Chris
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris Owen ~ Garden City (620) 275-1900 ~ Lottery (noun):
President ~ Wichita (316) 858-3000 ~ A stupidity tax
Hubris Communications Inc www.hubris.net
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