Re: [mailop] Recent "banned sending IP" errors when sending to Microsoft
That looks like the standard Office365 "you got listed" message. Even legitimate B2B bulk mail will now and then generate these. Just follow the instructions; delisting is straightforward. If it recurs, of course, you might have a troublesome mailer on your hands. John On Mon, Jun 25, 2018 at 12:24 PM, Josh Campbell wrote: > Has anyone else noticed these errors? We hadn't really seen them > previously. They look like this: > > smtp;550 5.7.606 Access denied, banned sending IP [xxx.xxx.xxx.xxx]. To > request removal from this list please visit https://sender.office.com/ > and follow the directions. For more information please go to > http://go.microsoft.com/fwlink/?LinkID=526655 (AS16012609) [ > AM5EUR03FT031.eop-EUR03.prod.protection.outlook.com] > > We've only started seeing them in the past month and only a small amount > of IPs have been affected at any one time. > > The interesting thing is all of these IPs are in the same IP range (out of > the three major ranges we have). > > I'm wondering if this is a new phenomenon for anyone else and why it only > appears to affect one of my IP ranges. (Also, if anyone from Microsoft > cares to get in touch, I'd love to hear from you.) > > Josh Campbell, Deliverability Engineer > MailChimp > > > ___ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop > > ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
Re: [mailop] Comcast contact? bounce.care.comcast.com
Hey Carl, I think this refers to emails originating within the Salesforce Marketing Cloud (ExactTarget) platform, but the SPF missing IP and DKIM failure touch on something that I think is happening to the mail after it leaves our system. I've spun up a support case to reach out to the client and ask them if they'd like us to update the SPF record as indicated and suggesting that they review the potential DKIM configuration issue. If a Comcast person sees this and wants to coordinate, feel free to reach out to me. Thanks for the heads up. Cheers, Al Iverson On Mon, Jun 25, 2018 at 12:12 PM Carl Byington wrote: > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA512 > > bounce.care.comcast.com has > > "v=spf1 include:cust-spf.exacttarget.com ip4:76.96.68.101 > ip4:76.96.68.102 ip4:76.96.68.103 ip4:69.252.76.7 ip4:69.252.76.8 > ip4:69.252.76.9 -all" > > Note the -all, but at least some mail is arriving here via resqmta-po- > 04v.sys.comcast.net == 96.114.154.163 not listed in the above spf > record. You might want to fix that. > > Also, the DKIM signature from mdp.comcast.net is broken - > reason="signature verification failed". > > > -BEGIN PGP SIGNATURE- > Version: GnuPG v2.0.14 (GNU/Linux) > > iEYEAREKAAYFAlsxE2YACgkQL6j7milTFsHZlQCfQ7i8CCsnP+Jy5R1lrFjw7A// > VyQAn3yFmOu5o/0HTCDnMUWHyH78DS48 > =XKZW > -END PGP SIGNATURE- > > > > ___ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- al iverson // 312-725-0130 // miami http://www.aliverson.com http://www.spamresource.com ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
[mailop] Recent "banned sending IP" errors when sending to Microsoft
Has anyone else noticed these errors? We hadn't really seen them previously. They look like this: smtp;550 5.7.606 Access denied, banned sending IP [xxx.xxx.xxx.xxx]. To request removal from this list please visit https://sender.office.com/ and follow the directions. For more information please go to http://go.microsoft.com/fwlink/?LinkID=526655 (AS16012609) [ AM5EUR03FT031.eop-EUR03.prod.protection.outlook.com] We've only started seeing them in the past month and only a small amount of IPs have been affected at any one time. The interesting thing is all of these IPs are in the same IP range (out of the three major ranges we have). I'm wondering if this is a new phenomenon for anyone else and why it only appears to affect one of my IP ranges. (Also, if anyone from Microsoft cares to get in touch, I'd love to hear from you.) Josh Campbell, Deliverability Engineer MailChimp ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
Re: [mailop] [EXTERNAL] Comcast contact? bounce.care.comcast.com
Carl, You can contact me off-list with specific details if you have more information. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast -Original Message- From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Carl Byington Sent: Monday, June 25, 2018 12:09 PM To: mailop@mailop.org Subject: [EXTERNAL] [mailop] Comcast contact? bounce.care.comcast.com -BEGIN PGP SIGNED MESSAGE- Hash: SHA512 bounce.care.comcast.com has "v=spf1 include:cust-spf.exacttarget.com ip4:76.96.68.101 ip4:76.96.68.102 ip4:76.96.68.103 ip4:69.252.76.7 ip4:69.252.76.8 ip4:69.252.76.9 -all" Note the -all, but at least some mail is arriving here via resqmta-po- 04v.sys.comcast.net == 96.114.154.163 not listed in the above spf record. You might want to fix that. Also, the DKIM signature from mdp.comcast.net is broken - reason="signature verification failed". -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.14 (GNU/Linux) iEYEAREKAAYFAlsxE2YACgkQL6j7milTFsHZlQCfQ7i8CCsnP+Jy5R1lrFjw7A// VyQAn3yFmOu5o/0HTCDnMUWHyH78DS48 =XKZW -END PGP SIGNATURE- ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
[mailop] Comcast contact? bounce.care.comcast.com
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 bounce.care.comcast.com has "v=spf1 include:cust-spf.exacttarget.com ip4:76.96.68.101 ip4:76.96.68.102 ip4:76.96.68.103 ip4:69.252.76.7 ip4:69.252.76.8 ip4:69.252.76.9 -all" Note the -all, but at least some mail is arriving here via resqmta-po- 04v.sys.comcast.net == 96.114.154.163 not listed in the above spf record. You might want to fix that. Also, the DKIM signature from mdp.comcast.net is broken - reason="signature verification failed". -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.14 (GNU/Linux) iEYEAREKAAYFAlsxE2YACgkQL6j7milTFsHZlQCfQ7i8CCsnP+Jy5R1lrFjw7A// VyQAn3yFmOu5o/0HTCDnMUWHyH78DS48 =XKZW -END PGP SIGNATURE- ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
