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From: Joe Greco <jgreco@ns.sol.net> To: cstone@axint.net (Chris Stone) Date: Thu, 10 Apr 2008 14:29:08 -0500 (CDT) Cc: nanog@merit.edu In-Reply-To: <47FE5319.10609@axint.net> from "Chris Stone" at Apr 10, 2008 11:49:13 AM Errors-To: owner-nanog@merit.edu > Barry Shein wrote: > > Is it just us or are there general problems with sending email to > > yahoo in the past few weeks? Our queues to them are backed up though > > they drain slowly. > > > > They frequently return: > > > > 421 4.7.0 [TS01] Messages from MAILSERVERIP temporarily deferred due to user complaints - 4.16.55.1; see http://postmaster.yahoo.com/421-ts01.html > > > > (where MAILSERVERIP is one of our mail server ip addresses) > .... > > Just wondering if this was a widespread problem or are we just so > > blessed, and any insights into what's going on over there. > > I see this a lot also and what I see causing it is accounts on my servers > that don't opt for spam filtering and they have their accounts here set to > forward mail to their yahoo.com accounts - spam and everything then gets > sent there - they complain to yahoo.com about the spam and bingo - email > delays from here to yahoo.com accounts.... We had this happen when a user forwarded a non-filtered mail stream from here to Yahoo. The user indicated that no messages were reported to Yahoo as spam, despite the fact that it's certain some of them were spam. I wouldn't trust the error message completely. It seems likely that a jump in volume may trigger this too, especially of an unfiltered stream. ... JG -- Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net "We call it the 'one bite at the apple' rule. Give me one chance [and] then I won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN) With 24 million small businesses in the US alone, that's way too many apples.
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