Hi all,
I was wondering if anyone had any experience/suggestions regarding
warming an IP address that delivers to Yahoo managed domains (yahoo,
aol, sky.com, etc)?
We're bringing up a new Postfix instance handling outbound transactional
and marketing emails for our e-commerce site. The IP doesn't appear on
any spam-lists that I can find, we're signing all our emails and
deliverability from the sibling Postfix instances to Yahoo addresses is
entirely fine. List-unsubs & service-feedback on spam are all acted upon
automatically. As best I know: we're a good citizen.
The new server has been delivering low-volume transaction messages
(receipts, purchased vouchers, etc) for 6 weeks or so and we've been
gradually delivering lower value, higher volume content to our
subscriber list through it for about the past 2 weeks. Hotmail, Gmail,
other big providers are all entirely fine with the volume and we're
seeing accepted messages and expected levels of click-thought
afterwards.
Except for Yahoo.
As soon as we send more than a couple of messages to yahoo within a few
minutes we see...
Messages from 151.236.220.98 temporarily deferred due to unexpected
volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM
command)
Messages get deferred for 6-8 hours before being accepted.
Yahoo support have said a problem with the IP was "fixed", but the
problem persists.
Has anyone had particular trouble convincing Yahoo to accept messages?
Thanks,
Gavin
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