RE: Yahoo! Mail/Sys Admin

Hello Everyone,

It's been a while since I posted on this topic, and
unfortunately I'm still
having trouble with Yahoo deferrals.  The links that were
provided in this
post worked, but after the forms were received by what I
*think* is a human
I still got a canned reply.  I've tried replying with
specific details about
our problem, but is either answered with another generic
reply or not at
all.  We are running Imall, and each domain has it's own IP
address.  Queue
Timer and Tries before returning to sender are set to 30
minutes / 5
attempts.  According to yahoo they do want you to attempt to
resend if you
get a 421 error.  SPF is also set on a per-domain basis.  
I'm not sure what
else to try. Does anyone have a better understanding of how
Yahoo
greylisting works?

Thanks in advance!


Justin Wilson

Hello,

Try encorporating DomainKeys and applying for their feedback
loop.

http://help.yahoo.com/l/us/yahoo/mail/postmaste
r/forms_index.html

I still have the same problem. Do you have any users who
forward their email to their free yahoo.com addresses from
your server?

Let me know if you get in touch with anyone 

-Ray

________________________________________
From: owner-nanogmerit.edu [owner-nanogmerit.edu] On Behalf Of Justin Wilson [jwilsoncorp.nac.net]
Sent: Wednesday, February 27, 2008 10:01 AM
To: nanogmerit.edu
Subject: RE: Yahoo! Mail/Sys Admin

Hello Everyone,

It's been a while since I posted on this topic, and
unfortunately I'm still
having trouble with Yahoo deferrals.  The links that were
provided in this
post worked, but after the forms were received by what I
*think* is a human
I still got a canned reply.  I've tried replying with
specific details about
our problem, but is either answered with another generic
reply or not at
all.  We are running Imall, and each domain has it's own IP
address.  Queue
Timer and Tries before returning to sender are set to 30
minutes / 5
attempts.  According to yahoo they do want you to attempt to
resend if you
get a 421 error.  SPF is also set on a per-domain basis.  
I'm not sure what
else to try. Does anyone have a better understanding of how
Yahoo
greylisting works?

Thanks in advance!


Justin Wilson

>Do you have any users who forward their email to their
free
>yahoo.com addresses from your server?

That is likely the core of Justin's problem.

We've found the way to minimize issues with yahoo mail are:

1. Clean up (ideally eliminate) the .forwarders on your
end.
	This requires some effort on your part to educate your
	customers on how they are making their own lives
	more difficult with their behaviors. Always a tough task.

2. Scour your outbound queues of garbage
	"be conservative in what you send"

3. Agressive delivery retries, but early discards.
	In other words, we've noted the yahoo MX machines seem to
	operate their greylists independantly, so if one stops you
	the next one may not. Don't wait too long before you retry
	but dump mail after X hours if yahoo won't accept it.
We've
	settled on 6 hours. Any longer and it just stays backed up
	forever.

>Let me know if you get in touch with anyone 
>
>-Ray

I agree with Ray on this one... I'll gladly buy a sushi
lunch for the 
first real yahoo mail admin that ever appears in meatspace.
I'm 
convinced that there are no real humans working mail ops
there.

--chuck

On Wed, 2008-02-27 at 14:03 -0800, chuck goolsbee wrote:
> I agree with Ray on this one... I'll gladly buy a sushi
lunch for the 
> first real yahoo mail admin that ever appears in
meatspace. I'm 
> convinced that there are no real humans working mail
ops there.

Wearing my academic IT hat for a moment, a Real Person! (tm)
appeared on
the HIED-EMAILADMIN list (hosted by nd.edu) earlier today,
in answer to
a lot of talk about how bad things have got with Yahoo
recently.

Out of politeness (since his email was obviously aimed at
the list
membership, which isn't NANOG) I have asked if he minds my
forwarding it
to other lists (well, I started with the mailopmailop.org list, but
I'll work from there).

His title, not giving too much away, is:

Anti-Abuse Product Manager
Yahoo! Mail

And you may, or may not, find his details in the list
archives of the
first list I mentioned above.

I hope someone finds my not mentioning this fruitful 

Graeme