Gmail has never suggested they care. Laura
Sent from my iPhone > On Sep 6, 2019, at 8:38 PM, Brandon Long <[email protected]> wrote: > > Now people have made me curious what they set those values to for Gmail. We > don't have simple limits like those (a quick check shows the max number of > messages sent on a single connection in the past week is 414k, and I know > I've seen total number of connections from a single source over 10k), the > throttling is on a more esoteric collections of signals ... > > Brandon > >> On Fri, Sep 6, 2019 at 5:06 AM Laura Atkins via mailop <[email protected]> >> wrote: >> There were smaller folks who did tarpit heavily and there was likely badly >> written spamware, but neither of those were cases I was thinking about. >> >> I’m, basically, quoting one of the mail engineers from one of the large >> mailbox providers. They implemented limits to connections and limits to >> number of emails per connection based on specific malicious behavior from >> spammers. >> >> laura >> >> >>> On 6 Sep 2019, at 11:24, Dave Holmes <[email protected]> wrote: >>> >>> I remember that IIRC a lot of that was down to the receiving mail server >>> tar-pitting perceived spam connections to deter. However a lot of software >>> was so crude it had no connection timeouts and just sat there - haven't >>> seen that behaviour in a very long time :) >>> >>> On Fri, 6 Sep 2019 at 11:08, Laura Atkins via mailop <[email protected]> >>> wrote: >>>> There was a point in time where if you didn’t limit the number of messages >>>> per session a few of the larger mailbox providers would simply cut you >>>> off. The issue was some spammers were making hundreds of connections and >>>> then holding them open for days (yes, really, more than 24 hours at a >>>> time). A few of the big mailbox providers addressed this by limiting the >>>> number of connections from a single IP and limiting the number of emails >>>> you could send down a connection before disconnecting and reconnecting. >>>> >>>> laura >>>> >>>> >>>>> On 5 Sep 2019, at 16:31, Brotman, Alexander via mailop >>>>> <[email protected]> wrote: >>>>> >>>>> 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]> >>>>> Sent: jeudi 5 septembre 2019 15:57 >>>>> To: Benjamin BILLON <[email protected]> >>>>> Cc: [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]> 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]> On Behalf Of Dave Holmes via >>>>> mailop >>>>> Sent: jeudi 5 septembre 2019 15:21 >>>>> To: Ewald Kessler | Webpower <[email protected]> >>>>> Cc: mailop <[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]> 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]> >>>>> wrote: >>>>> We're currently seeing several yahoo domains (ex yahoo.de) cannot be >>>>> resolved any more in DNS. All the responsable nameservers for that >>>>> domain do not reply anymore. Only ns4.yahoo.com replies from time to >>>>> time for yahoo.de but according to glue record ns4.yahoo.com is not in >>>>> charge for yahoo.de anymore. >>>>> >>>>> anyone else seeing such problems with yahoo? >>>>> >>>>> -- >>>>> Cheers >>>>> >>>>> tobi >>>>> >>>>> _______________________________________________ >>>>> mailop mailing list >>>>> [email protected] >>>>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>>>> >>>>> >>>>> -- >>>>> Deliverability & Abuse Management, www.webpower-group.com >>>>> [email protected] >>>>> t: +31 342 423 262 >>>>> li: www.linkedin.com/in/ewaldkessler >>>>> _______________________________________________ >>>>> mailop mailing list >>>>> [email protected] >>>>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>>>> >>>>> >>>>> -- >>>>> >>>>> <image002.jpg> >>>>> >>>>> Dave Holmes >>>>> Technical Director >>>>> >>>>> [email protected] >>>>> 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 >>>>> [email protected] >>>>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>>>> >>>>> >>>>> -- >>>>> >>>>> <image002.jpg> >>>>> >>>>> Dave Holmes >>>>> Technical Director >>>>> >>>>> [email protected] >>>>> 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 >>>>> [email protected] >>>>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>>> >>>> -- >>>> Having an Email Crisis? We can help! 800 823-9674 >>>> >>>> Laura Atkins >>>> Word to the Wise >>>> [email protected] >>>> (650) 437-0741 >>>> >>>> Email Delivery Blog: https://wordtothewise.com/blog >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> mailop mailing list >>>> [email protected] >>>> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >>> >>> >>> -- >>> >>> >>> Dave Holmes >>> Technical Director >>> >>> [email protected] >>> 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. >> >> -- >> Having an Email Crisis? We can help! 800 823-9674 >> >> Laura Atkins >> Word to the Wise >> [email protected] >> (650) 437-0741 >> >> Email Delivery Blog: https://wordtothewise.com/blog >> >> >> >> >> >> >> >> _______________________________________________ >> mailop mailing list >> [email protected] >> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
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