I saw this the first time on 15th may 2018. I unlisted an IP even today. The unlisting is very fast and, at this time, IPs unlisted have not been relisted.
In my case it happened with IPs from 3 different ranges. One of the ranges had most of the IPs involved in the weeks, while the other 2 ranges only had few occourences. Stefano On Mon, 25 Jun 2018 at 18:33, Josh Campbell <[email protected]> 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 > [email protected] > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Stefano Bagnara Apache James/jDKIM/jSPF VOXmail/Mosaico.io/VoidLabs _______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
