outlook.com outgoing blacklists?
Todd K Grand
tgrand at tgrand.com
Wed Sep 9 16:49:30 UTC 2015
I have an email server which hosts 3 domains.
I have reason to believe that microsoft maintains an outgoing blacklist and would like confirmation on this.
I have had many a report that people on domains hosted on hotmail/outlook are getting messages bounced back stating that our server was unreachable.
This only happens for one of the three domains hosted on our server.
I went to outlook.com and setup an account.
When I create a new message and enter the recipient at that affected domain, the address immediately turns red, and when I hover over it states that
the address may not be valid.
This happens without ever sending a packet to our servers.
The affected domain can send emails to hotmail/outlook accounts just fine.
Anybody have some recommendations on how I resolve this, as Microsoft support seems to be under technical.
Thanks,
Todd K. Grand
More information about the NANOG
mailing list