[Mailman-Users] OT: Yahoo Deferrals

Jeff Grossman jeffg at turners.com
Fri Oct 2 19:21:02 CEST 2009

On Fri, 2 Oct 2009 19:12:12 +0200, Ralf Hildebrandt
<Ralf.Hildebrandt at charite.de> wrote:
> * Jeff Grossman <jeffg at turners.com>:
>> I have a question regarding Yahoo deferrals.  I know this subject has
>> been talked about a lot.  Everything I could find via Google was from at
>> least a year ago though.  I was wondering if anybody has found new ways
>> of limiting the Yahoo deferrals?  I run two mailing lists.
> I run (with others) mail.python.org, and we send assloads of mail to
> yahoo!
> What we did:
> * set up DKIM for python.org
> * subscribed to/set up Yahoo's FBL: http://feedbackloop.yahoo.net/
> * made sure that whoever complains @yahoo gets unsubscribed silently
>   within a jiffy.
> We haven't seen any large scale deferrals for a long time now.
> I also use:
> yahoo.com  	slow:
> in transport_maps with
> slow      unix  -       -       -       -       -       smtp
> in master.cf and
> slow_delivery_rate_delay = 1s
> in main.cf

Thank you for that.  I forgot to mention that I did setup DKIM for the
domain I am sending mail from.  That is the only way to get added to their
FBL.  I will add the slow_delivery_rate_delay and see if that also makes a

I am also unsubscribing anybody who complains as soon as I get the feedback
e-mail from Yahoo.  I have only started doing that for the past two weeks
though.  So maybe this deferral problem will go away.

Thanks again.


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