Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On Thu, Oct 27, 2022, Otto J. Makela via mailop wrote: > Unfortunately sendmail doesn't seem to have anything to do this on > a permanent basis (ref: Claus AÃmann on comp.mail.sendmail), I'd be > fine with IPv4 outgoing IPv4/IPv6 incoming. A patch has been posted to comp.mail.sendmail, but seemingly no feedback (yet?). -- Please don't Cc: me, use only the list for replies. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
A friend with contacts at Microsoft says: The IPv6 rejection is well understood, a postmortem is being done on why a configuration change was made by the networking team on the 25th without the appropriate notification or rings for verification. Evidently at Microsoft, quality is still job 1.1. R's, John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On Sat, Oct 29, 2022, Benny Pedersen via mailop wrote: > https://multirbl.valli.org/fcrdns-test/2a01%3A111%3Af400%3A7d00%3A%3A33.html > such clients will not deliver email here, as the t-online.de dont accept It seems those were supposed to be servers. Do you have any evidence that they were used as clients too? -- Please don't Cc: me, use only the list for replies. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On Thu, Oct 27, 2022, Peter Beckman via mailop wrote: > Deferred: 451 4.7.500 Server busy. Please try again later from > [2a01:111:e400:7e0d::51]. (AS750) Doesn't the MTA (which one do you use?) also try IPv4 or were there no A records at all? Do you still have the results for the MX and A/ lookups when the problem happened? TIA. -- Please don't Cc: me, use only the list for replies. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
I'm late to the party. Had the same issue. tl;dr -- Microsoft removed the IPv6 record around 8:09pm US EDT (00:09 UTC) and all of our backed up email is now delivered successfully. Long story: We've been delivering to hotmail for years, and I've got logs going back to May 29, 2022. Microsoft added IPv6 records likely around Oct 24, 2022 at 21:06:13 UTC, as prior to that email, everything was IPv4 in the logs. Everything was fine between 21:06:13 and 22:00:57, when, after 9 emails had been successfully delivered, after almost 700,000 between May 29, 2022 and Oct 24, 2022 were delivered without issue via IPv4, we received the dreaded Deferred: 451 4.7.500 Server busy. Please try again later from [2a01:111:e400:7e0d::51]. (AS750) [HE1EUR04FT020.eop-eur04.prod.protection.outlook.com] As Frank privately pointed out to me, some emails were delivered via IPv6, 389 to be exact, but many more were not, with a handful of emails still being rejected from Oct 24 still today! 8 Oct 24 71 Oct 25 80 Oct 26 222 Oct 27 And after the IPv6 was removed, we delivered 1,178 emails in about 2-3 minutes. So while the immediate outage is resolved, I'm not looking forward to the next time this happens. Cheers Beckman, new subscriber because of this --- Peter Beckman Internet Guy beck...@angryox.comhttps://www.angryox.com/ --- ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On 25/10/2022 17.40, Frank Bulk via mailop wrote: We had it last night, too, but this morning seeing it again for hotmail.com, outlook.com, and live.com: Same here, with also the country-specific hotmail/live domains and msn.com (hardly surprisingly, as they are on the same servers). My temporary solution is to hardwire these for IPv4 delivery, which nicely cleared our queues. This does not scale. Unfortunately sendmail doesn't seem to have anything to do this on a permanent basis (ref: Claus Aßmann on comp.mail.sendmail), I'd be fine with IPv4 outgoing IPv4/IPv6 incoming. Also, Google seems to now be responding to a similar situation with a dsn=5.0.0 answer. How nice of them. -- /* * * Otto J. Makela * * * * * * * * * */ /* Phone: +358 40 765 5772, ICBM: N 60 10' E 24 55' */ /* Mail: Mechelininkatu 26 B 27, FI-00100 Helsinki */ /* * * Computers Rule 0100 01001011 * * * * * * */ ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On 2022-10-25 18:56, Andreas S. Kerber via mailop wrote: @hotmail.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=41706, relay=hotmail-com.olc.protection.outlook.com. [IPv6:2a01:111:f400:7e8a:0:0:0:33], dsn=4.7.500, reply=451 4.7.500 Server busy. Please try again later from [2a01:111:e400:7e8f::47]. (AS750) [BN7NAM10FT103.eop-nam10.prod.protection.outlook.com] Quite a lot of mail queuing up already. Anybody know what's going on over there? As far as I can tell it's just some form of greylisting, but with a bad message. I have ~800 mails in queue for MS with the "Server busy" message and the oldest one is from ~40m ago. Older than that is all delivered. -- BR/Mvh. Dan Malm, Systems Engineer, One.com OpenPGP_0x328258BA5141B0F4.asc Description: OpenPGP public key OpenPGP_signature Description: OpenPGP digital signature ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
Hello, Mostly on the same topic : M$ vs rest of the world, now receiving mail from these guys Seems that M$ is fscked with starttls : Oct 26 05:40:57 mx2 postfix/smtpd[44098]: connect from mail-bn8nam04on2061.outbound.protection.outlook.com[40.107.100.61] Oct 26 05:40:57 mx2 postfix/smtpd[44098]: SSL_accept error from mail-bn8nam04on2061.outbound.protection.outlook.com[40.107.100.61]: -1 Oct 26 05:40:57 mx2 postfix/smtpd[44098]: lost connection after STARTTLS from mail-bn8nam04on2061.outbound.protection.outlook.com[40.107.100.61] Oct 26 05:40:57 mx2 postfix/smtpd[44098]: disconnect from mail-bn8nam04on2061.outbound.protection.outlook.com[40.107.100.61] ehlo=1 starttls=0/1 commands=1/2 (and in IPv6) Oct 26 05:40:59 mx2 postfix/smtpd[44098]: connect from mail-bn8nam04on20611.outbound.protection.outlook.com[2a01:111:f400:7e8d::611] Oct 26 05:40:59 mx2 postfix/smtpd[44098]: SSL_accept error from mail-bn8nam04on20611.outbound.protection.outlook.com[2a01:111:f400:7e8d::611]: -1 Oct 26 05:40:59 mx2 postfix/smtpd[44098]: lost connection after STARTTLS from mail-bn8nam04on20611.outbound.protection.outlook.com[2a01:111:f400:7e8d::611] Oct 26 05:40:59 mx2 postfix/smtpd[44098]: disconnect from mail-bn8nam04on20611.outbound.protection.outlook.com[2a01:111:f400:7e8d::611] ehlo=1 starttls=0/1 commands=1/2 Well this is on my server receiving mails... I had some contact that told me my mail is broken (but this is only outlook.com that seems to have this issue). Well maybe m$ has to fix their TLS 1.2+ system ? and maybe try to support TLS1.3... no ? is this "professionnal" services or yolo services? Regards ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
One tweet thread here on the topic: https://twitter.com/dergrobi/status/1585016960785723392 Frank -Original Message- From: mailop On Behalf Of mailop@mailop.org Sent: Tuesday, October 25, 2022 5:17 PM To: mailop@mailop.org Subject: Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6 I cleared out my backlog earlier this afternoon by temporarily directing those three domains plus msn.com to one of the IPv4 addresses in their MX record, but after removing that override, email is backing up again. =( Frank -Original Message- From: mailop On Behalf Of Michael Peddemors via mailop Sent: Tuesday, October 25, 2022 3:13 PM To: mailop@mailop.org Subject: Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6 On 2022-10-25 09:56, Andreas S. Kerber via mailop wrote: > Am Tue, Oct 25, 2022 at 09:40:41AM -0500 schrieb Frank Bulk via mailop: >> We had it last night, too, but this morning seeing it again for hotmail.com, >> outlook.com, and live.com: > > Confirmed: > > @hotmail.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, > pri=41706, relay=hotmail-com.olc.protection.outlook.com. > [IPv6:2a01:111:f400:7e8a:0:0:0:33], dsn=4.7.500, reply=451 4.7.500 Server > busy. Please try again later from [2a01:111:e400:7e8f::47]. (AS750) > [BN7NAM10FT103.eop-nam10.prod.protection.outlook.com] > > Quite a lot of mail queuing up already. Anybody know what's going on over > there? > ___ Probably just finding out how much the spammers like using IPv6 ;) -- "Catch the Magic of Linux..." Michael Peddemors, President/CEO LinuxMagic Inc. Visit us at http://www.linuxmagic.com @linuxmagic A Wizard IT Company - For More Info http://www.wizard.ca "LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd. 604-682-0300 Beautiful British Columbia, Canada This email and any electronic data contained are confidential and intended solely for the use of the individual or entity to which they are addressed. Please note that any views or opinions presented in this email are solely those of the author and are not intended to represent those of the company. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
I cleared out my backlog earlier this afternoon by temporarily directing those three domains plus msn.com to one of the IPv4 addresses in their MX record, but after removing that override, email is backing up again. =( Frank -Original Message- From: mailop On Behalf Of Michael Peddemors via mailop Sent: Tuesday, October 25, 2022 3:13 PM To: mailop@mailop.org Subject: Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6 On 2022-10-25 09:56, Andreas S. Kerber via mailop wrote: > Am Tue, Oct 25, 2022 at 09:40:41AM -0500 schrieb Frank Bulk via mailop: >> We had it last night, too, but this morning seeing it again for hotmail.com, >> outlook.com, and live.com: > > Confirmed: > > @hotmail.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, > pri=41706, relay=hotmail-com.olc.protection.outlook.com. > [IPv6:2a01:111:f400:7e8a:0:0:0:33], dsn=4.7.500, reply=451 4.7.500 Server > busy. Please try again later from [2a01:111:e400:7e8f::47]. (AS750) > [BN7NAM10FT103.eop-nam10.prod.protection.outlook.com] > > Quite a lot of mail queuing up already. Anybody know what's going on over > there? > ___ Probably just finding out how much the spammers like using IPv6 ;) -- "Catch the Magic of Linux..." Michael Peddemors, President/CEO LinuxMagic Inc. Visit us at http://www.linuxmagic.com @linuxmagic A Wizard IT Company - For More Info http://www.wizard.ca "LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd. 604-682-0300 Beautiful British Columbia, Canada This email and any electronic data contained are confidential and intended solely for the use of the individual or entity to which they are addressed. Please note that any views or opinions presented in this email are solely those of the author and are not intended to represent those of the company. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
On 2022-10-25 09:56, Andreas S. Kerber via mailop wrote: Am Tue, Oct 25, 2022 at 09:40:41AM -0500 schrieb Frank Bulk via mailop: We had it last night, too, but this morning seeing it again for hotmail.com, outlook.com, and live.com: Confirmed: @hotmail.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=41706, relay=hotmail-com.olc.protection.outlook.com. [IPv6:2a01:111:f400:7e8a:0:0:0:33], dsn=4.7.500, reply=451 4.7.500 Server busy. Please try again later from [2a01:111:e400:7e8f::47]. (AS750) [BN7NAM10FT103.eop-nam10.prod.protection.outlook.com] Quite a lot of mail queuing up already. Anybody know what's going on over there? ___ Probably just finding out how much the spammers like using IPv6 ;) -- "Catch the Magic of Linux..." Michael Peddemors, President/CEO LinuxMagic Inc. Visit us at http://www.linuxmagic.com @linuxmagic A Wizard IT Company - For More Info http://www.wizard.ca "LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd. 604-682-0300 Beautiful British Columbia, Canada This email and any electronic data contained are confidential and intended solely for the use of the individual or entity to which they are addressed. Please note that any views or opinions presented in this email are solely those of the author and are not intended to represent those of the company. ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
Benny, Thanks, but I'm not sure how the Xbox article relates to what we're seeing? While our email system doesn't allow us to force a certain domain to use IPv4 (or IPv6), we could force it to deliver to certain IP addresses, which we could do to temporarily work around the issue. Frank -Original Message- From: mailop On Behalf Of Benny Pedersen via mailop Sent: Tuesday, October 25, 2022 10:25 AM To: mailop@mailop.org Subject: Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6 Frank Bulk via mailop skrev den 2022-10-25 16:40: > They're all IPv6 hosts, though it's possibly our MTA prefers that when > communicating to Microsoft. https://support.xbox.com/en-US/help/hardware-network/connect-network/ipv6-on-xbox-one :-) glibc have ipv6 preferelble /etc/gai.conf can change that to ipv4 all it is that now microsoft finaly open ipv6 in global scopes https://serverfault.com/questions/1049845/configure-postfix-to-send-via-ipv4-but-receive-using-both-ipv4-ipv6 ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
Am Tue, Oct 25, 2022 at 09:40:41AM -0500 schrieb Frank Bulk via mailop: > We had it last night, too, but this morning seeing it again for hotmail.com, > outlook.com, and live.com: Confirmed: @hotmail.com>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=41706, relay=hotmail-com.olc.protection.outlook.com. [IPv6:2a01:111:f400:7e8a:0:0:0:33], dsn=4.7.500, reply=451 4.7.500 Server busy. Please try again later from [2a01:111:e400:7e8f::47]. (AS750) [BN7NAM10FT103.eop-nam10.prod.protection.outlook.com] Quite a lot of mail queuing up already. Anybody know what's going on over there? ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
Frank Bulk via mailop skrev den 2022-10-25 16:40: They're all IPv6 hosts, though it's possibly our MTA prefers that when communicating to Microsoft. https://support.xbox.com/en-US/help/hardware-network/connect-network/ipv6-on-xbox-one :-) glibc have ipv6 preferelble /etc/gai.conf can change that to ipv4 all it is that now microsoft finaly open ipv6 in global scopes https://serverfault.com/questions/1049845/configure-postfix-to-send-via-ipv4-but-receive-using-both-ipv4-ipv6 ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
[mailop] Anyone else seeing email backed up to Microsoft -- only IPv6
We had it last night, too, but this morning seeing it again for hotmail.com, outlook.com, and live.com: @premieronline.net@hotmail.com ubad=980379246, () Site (hotmail.com/2a01:111:f400:7ea9::33) said: 451 4.7.500 Server busy. Please try again later from [2a01:111:e400:fc4a::4e]. (AS750) [SN1NAM02FT0003.eop-nam02.prod.protection.outlook.com] @premieronline.net@outlook.com ubad=980379246, () Site (outlook.com/2a01:111:f400:fe59::33) said: 451 4.7.500 Server busy. Please try again later from [2a01:111:e400:fc64::41]. (AS750) [DM6NAM12FT053.eop-nam12.prod.protection.outlook.com] @mypremieronline.com @live.com ubad=980379246, () Site (live.com/2a01:111:f400:7d00::33) said: 451 4.7.500 Server busy. Please try again later from [2a01:111:e400:fc12::48]. (AS750) [VI1EUR05FT046.eop-eur05.prod.protection.outlook.com] They're all IPv6 hosts, though it's possibly our MTA prefers that when communicating to Microsoft. Frank ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
