We've been seeing a lot of these too. My question: does this mean we are sending too fast/opening too many connections? Or does this mean there is a legitimate temporary bottleneck on Hotmail's end that requires a simple retry?
Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Engineer [email protected] 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> On Wed, Apr 3, 2019 at 10:34 AM Frank Bulk <[email protected]> wrote: > FYI, saw this logged by one of our email servers: > > <redacted>@premieronline.net <redacted>@hotmail.com Site > hotmail.com (104.47.0.33) said after data sent: 451 4.4.0 Message failed > to > be replicated: Insufficient system resource > [HE1EUR01HT060.eop-EUR01.prod.protection.outlook.com] > [HE1EUR01FT041.eop-EUR01.prod.protection.outlook.com] > > Frank > > > > _______________________________________________ > mailop mailing list > [email protected] > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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