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