Alex How many connections does Comcast allow from a single source before Comcast either starts limiting connections or outright blocks all connections from that IP address?
hc Howard Cunningham, MCP [email protected]<mailto:[email protected]> - personal For technical support, send an email to [email protected]<mailto:[email protected]> or call 703-359-9211 (24/7) From: mailop [mailto:[email protected]] On Behalf Of Brotman, Alexander via mailop Sent: Thursday, September 05, 2019 11:31 AM To: '([email protected])' Subject: Re: [mailop] Resolving issues for several yahoo domains? 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 <[email protected]> On Behalf Of Benjamin BILLON via mailop Sent: Thursday, September 5, 2019 10:08 AM To: [email protected] 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 <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> Sent: jeudi 5 septembre 2019 15:57 To: Benjamin BILLON <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> Cc: [email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]> 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 <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> 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 <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> On Behalf Of Dave Holmes via mailop Sent: jeudi 5 septembre 2019 15:21 To: Ewald Kessler | Webpower <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> Cc: mailop <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> 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 <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> 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 <[email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]>> wrote: We're currently seeing several yahoo domains (ex yahoo.de<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=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<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=http://yahoo.de> but according to glue record ns4.yahoo.com<http://ns4.yahoo.com> is not in charge for yahoo.de<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=http://yahoo.de> anymore. anyone else seeing such problems with yahoo? -- Cheers tobi _______________________________________________ mailop mailing list [email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop> -- Deliverability & Abuse Management, www.webpower-group.com<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=http://www.webpower-group.com> [email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]> t: +31 342 423 262 li: www.linkedin.com/in/ewaldkessler<http://www.linkedin.com/in/ewaldkessler> _______________________________________________ mailop mailing list [email protected]<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=mailto:[email protected]> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop<https://r.xdref.com/?id=x85Facni004272&[email protected]&[email protected]&url=https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop> -- [Image removed by sender. 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