Problems sending mail to yahoo?

S. Ryan auser at
Thu Apr 10 18:05:15 UTC 2008

I work for an ISP that seems to have the same exact problem.  We're not 
even that large of an ISP, 5k customers maybe.  We are not a SPAM haven 

We've tried to work with Yahoo! also and have gotten nowhere.

If you find anything out on how to deal with it, let me know.

I'll update you if I or my Systems guys find out more but it's been 
going on for a couple weeks and I don't see an end in sight.



Barry Shein wroteth on 4/10/2008 10:30 AM:
> 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 -; see
>     (where MAILSERVERIP is one of our mail server ip addresses)
> Yes I followed the link and filled out the form but after several days
> no response or change.
> Despite the wording of their message we're not aware of any cause for
> "user complaints". For example if there were a spam leak you'd expect
> to see complaints in general to postmaster, abuse, etc. None we're
> aware of.
> We host quite a few mailing lists and it seems like whatever they're
> using is being touched off by the volume of (legitimate) mailing list
> traffic.
> I'm automatically moving all their email to a slower delivery queue to
> see if that helps.
> Just wondering if this was a widespread problem or are we just so
> blessed, and any insights into what's going on over there.


Steve Ryan

Master Solvinator

support at <mailto:support at>

Office:  541*.* 773*.* 5000

Fax:  541*.* 535*.* 7599

288 S Pacific Hwy

Talent, OR  97540


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