Thanks so much Matt. Did you make any adjustments on your end or was it just a matter of contacting Yahoo?
Any tricks with contacting Yahoo? I already did so this week but hit a stone wall. Are there any particular phrases that get you past the robots/canned responses? On Fri, Aug 10, 2018 at 3:27 PM Matt Gilbert <matthew.gilb...@mailchimp.com> wrote: > Hi Alexander, > > MailChimp had been seeing this issue as well across our IPs. It was > happening with all domains that use Yahoo’s mail infrastructure (AOL, > Verizon, etc). We reached out to Yahoo and they got it fixed up on their > end. Your milage may vary of course, but if what you’re seeing is related > to what we were seeing reaching out to Yahoo is the best bet. > > Thanks, > Matt Gilbert > -- > Deliverability Engineer | MailChimp > delivery.mailchimp.com > > > On Aug 10, 2018, at 4:12 PM, Alexander Burch <abu...@activecampaign.com> > wrote: > > We've seen a big uptick in Yahoo throttling in the past 7-10 days with > this typical message: > > 421 4.7.0 [TSS04] Messages from XX.XX.XX.XX temporarily deferred due to > user complaints - 4.16.55.1; see > https://help.yahoo.com/kb/postmaster/SLN3434.html > > This seems to be happening fairly indiscriminately across various IPs, and > I know for certain none of them have high complaint rates. > > Yahoo's postmaster page says "The error is temporary. We encourage you to > retry sending emails 4 hours after encountering the error." > https://help.yahoo.com/kb/postmaster/SLN3434.html > > We have backoffs at Yahoo, but they certainly don't last for 4 hours. > Should that be taken literally? If we see that error should we backoff > sending on that IP for 4 hours? That seems a bit extreme. Can anyone offer > perspective on the backoff intervals they use here? > > Thanks, > Alex > > > -- > > Alexander Burch > ActiveCampaign / Deliverability Engineer > abu...@activecampaign.com > 1 North Dearborn St Suite 500, Chicago IL, 60602 > <https://www.facebook.com/activecampaign> > <http://www.twitter.com/activecampaign> > <https://www.linkedin.com/company/activecampaign-inc-> > <https://plus.google.com/107063868317743606466> > > <https://www.activecampaign.com/sig/?u=aburch&c=1> > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop > -- Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Engineer abu...@activecampaign.com 1 North Dearborn St Suite 500, Chicago IL, 60602 <https://www.facebook.com/activecampaign> <http://www.twitter.com/activecampaign> <https://www.linkedin.com/company/activecampaign-inc-> <https://plus.google.com/107063868317743606466> <https://www.activecampaign.com/sig/?u=aburch&c=1>
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