They do have a feedback loop now:
http://help.yahoo.com/l/us/yahoo/mail/postmaster/cfl-form.html?from_url=http://help.yahoo.com/l/us/yahoo/mail/postmaster/

But it takes several days to receive a reply from that form, which is just a 
standard reply that tells you to fill out a form and mail it in (postal mail).

Even then the feedback loop is DomainKeys based instead of IP based, so for 
ISPs you don't know if your customers are sending spam to yahoo.

At least I know that I'm not alone now, thanks for the input.  I'll let 
everyone know if I make any headway.

-Tony

-----Original Message-----
From: Randy Ramsdell [mailto:[EMAIL PROTECTED]
Sent: Monday, February 25, 2008 1:51 PM
Cc: users@spamassassin.apache.org
Subject: Re: [OT] Yahoo Deferred

SM wrote:
> At 08:54 25-02-2008, Tony Bunce wrote:
>> Is anyone else having issues sending mail to Yahoo?
>
> No.
>
>> They are returning 421 Message temporarily deferred to every message
>> my servers try to send.  My server then retries like it should but
>> yahoo never accepts the message, even after day of retrying.
>> Google turned up several people having the same issue but no one with
>> a solution.  My DSN is right, I have SPF records, and sign outgoing
>> messages using DomainKeys.
>
> They are deferring connections from your mail servers due to spam or
> complaints.
>
> Regards,
> -sm
Incorrect! They rate limit everyone. If you're mail isn't being delayed,
then you do not send much mail to them. This has been an issue as long
as I can remember and nothing works to help. Use DKIM/Domain Keys, rotor
e-mail to different ips, fill out ALL there forms and comply with all
their rules. This will not put you on their whitelist and they do not
have a formal feedback loop. I have formally asked that we warn our
users to no use yahoo email addresses for this reason. As a matter of
fact, I have been able to work with every other large e-mail provider/
ISP (AOL/Comcast/Netzero , etc...) and work out e-mail issues with them.
I even have several contact numbers directly the administrators of these
companies. Yahoo simply sucks in this regard and they have not yet
figured out a way to properly set up restrictions so bulk e-mailers may
send e-mail. If you are going to store the largest numbered e-mail
accounts, then you will receive bulk mail.

Randy Ramsdell

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