One of the interesting things I’ve learned while interacting with ESPs is that some of them will artificially restrict the number of messages per session, in lieu of opening more sessions. Some of them have told me the values are in the low single digits. I’ve kind of wondered the rationale for that might be. Is it the idea that you want to get your messages through as quickly as possible?
-- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop <mailop-boun...@mailop.org> On Behalf Of Benjamin BILLON via mailop Sent: Thursday, September 5, 2019 10:08 AM To: mailop@mailop.org Subject: [EXTERNAL] Re: [mailop] Resolving issues for several yahoo domains? > Hate to imagine how much mail is currently trying to get into Yahoo and AOL Same. Hate also to imagine the day (and night?) of the folks working on fixing that. -- Benjamin From: Dave Holmes <d...@instiller.co.uk<mailto:d...@instiller.co.uk>> Sent: jeudi 5 septembre 2019 15:57 To: Benjamin BILLON <bbil...@splio.com<mailto:bbil...@splio.com>> Cc: mailop@mailop.org<mailto:mailop@mailop.org> Subject: Re: [mailop] Resolving issues for several yahoo domains? Not the quickest or easiest to do as a lot of senders will have different limits on different IP pools depending on reputation / previous throughput. I've dropped in a platform wide rule to back off the mail queues when the response is encountered - should do the Job. Hate to imagine how much mail is currently trying to get into Yahoo and AOL On Thu, 5 Sep 2019 at 14:39, Benjamin BILLON via mailop <mailop@mailop.org<mailto:mailop@mailop.org>> wrote: Yes, everyone. Some, very few, emails are accepted. I believe their servers are overloaded. I suggest everyone to back off a bit, for instance by limiting the number of concurrent connections per outbound IP to ... 1. Until it gets better. Forcing our way through is not gonna work, or help. The DNS issue seems solved now. -- Benjamin From: mailop <mailop-boun...@mailop.org<mailto:mailop-boun...@mailop.org>> On Behalf Of Dave Holmes via mailop Sent: jeudi 5 septembre 2019 15:21 To: Ewald Kessler | Webpower <ewald.kess...@webpower.nl<mailto:ewald.kess...@webpower.nl>> Cc: mailop <mailop@mailop.org<mailto:mailop@mailop.org>> Subject: Re: [mailop] Resolving issues for several yahoo domains? Were seeing large mail queues forming on our side but I think this extends beyond the DNS I've not come across this message from Yahoo before. Error: "421 Service not available, closing transmission channel tnmpmscs" So whilst we have the DNS resolution (possibly cached) they are dropping connections all over the place, same goes for all of their other domains. Anyone else with issues delivering after DNS resolves On Thu, 5 Sep 2019 at 10:31, Ewald Kessler | Webpower via mailop <mailop@mailop.org<mailto:mailop@mailop.org>> wrote: Yes, Oath (a.o. Yahoo, AOL) is having serious issues. Their engineers are working to resolve the issues. Regards, Ewald On Thu, 5 Sep 2019 at 10:35, tobisworld--- via mailop <mailop@mailop.org<mailto:mailop@mailop.org>> wrote: We're currently seeing several yahoo domains (ex yahoo.de<http://yahoo.de>) cannot be resolved any more in DNS. All the responsable nameservers for that domain do not reply anymore. Only ns4.yahoo.com<http://ns4.yahoo.com> replies from time to time for yahoo.de<http://yahoo.de> but according to glue record ns4.yahoo.com<http://ns4.yahoo.com> is not in charge for yahoo.de<http://yahoo.de> anymore. anyone else seeing such problems with yahoo? -- Cheers tobi _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Deliverability & Abuse Management, www.webpower-group.com<http://www.webpower-group.com> ewald.kess...@webpower.nl<mailto:ewald.kess...@webpower.nl> t: +31 342 423 262 li: www.linkedin.com/in/ewaldkessler<http://www.linkedin.com/in/ewaldkessler> _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- [Image removed by sender. Instiller Logo]<https://www.instiller.co.uk> Dave Holmes Technical Director d...@instiller.co.uk<mailto:d...@instiller.co.uk> T 0333 939 0013 | M 07966 013 309 1 Park Farm Barns | Packington Lane | Stonebridge | CV7 7TL Instiller is a trademark of Instiller Limited, registered in England 5053657. This email contains proprietary information, some of which may be legally privileged. It is for the intended recipient only. If an addressing or transmission in error has misdirected this email, please notify the author by replying to this email. If you are not the intended recipient, you must not use, disclose, distribute, copy, print or rely on this email. _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- [Image removed by sender. 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