Can someone please share an IP where this is being seen?
Aloha, Michael. -- Michael J Wise Microsoft Corporation| Spam Analysis "Your Spam Specimen Has Been Processed." Got the Junk Mail Reporting Tool<http://www.microsoft.com/en-us/download/details.aspx?id=18275> ? -----Original Message----- From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Davide Migliavacca via mailop Sent: Thursday, October 12, 2017 12:32 AM To: Mailop <mailop@mailop.org> Subject: [mailop] Hotmail and 4.5.1 4.7.500 Server Busy with some ASxxx attached Hello, did anybody get any sensible answer from Hotmail Sender Support about the 451 4.7.500 Server busy. Please try again later from [<ip-address>]. (AS843) [<someserver>.prod.protection.outlook.com] deferring a large percentage of traffic forever (even a 48 hours limit to retries won't help), obviously from DKIM-authenticated transactional messages emitted by top-reputation, SNDS-green, no-problem-whatsoever until the suspect recent infrastructure switch on their side IPs, and is willing to share the love you got from them? Sometimes the AS843 is AS844 instead. Have a nice day! Davide Davide Migliavacca cto, ContactLab Tel +39 02 2831181 https://na01.safelinks.protection.outlook.com/?url=www.contactlab.com&data=02%7C01%7Cmichael.wise%40microsoft.com%7C0a7d9c59bf9f4690eccf08d5114507e6%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636433910547624321&sdata=slyx3guEXD1CkGr%2B%2B6oeG6xyTcmJRUa6Cpuv1fxIjws%3D&reserved=0 _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fchilli.nosignal.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Fmailop&data=02%7C01%7Cmichael.wise%40microsoft.com%7C0a7d9c59bf9f4690eccf08d5114507e6%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636433910547624321&sdata=OKMDQrA8KWdEzewZMLWGOrlGqKoYtbftscNHMgnUpQk%3D&reserved=0
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