Problems registering from Microsoft email addresses (outlook.com, hotmail.com, msn.com, live.com, etc)

All about this Forum
User avatar
JTN
Elite
Posts: 450
Joined: Wed Jan 30, 2013 12:15 am

Problems registering from Microsoft email addresses (outlook.com, hotmail.com, msn.com, live.com, etc)

Postby JTN » Sun Jul 02, 2017 10:51 am

Attempts to register for forum accounts with email addresses run by Microsoft -- at least @outlook.com, @hotmail.com, @msn.com, and @live.com -- are frequently failing. The forum activation email is never delivered to you (and ends up in my inbox).

For the moment, I can only suggest registering with an alternative email address, such as an @gmail.com one, if you have one. Apologies for the inconvenience.

This is because Microsoft's email servers apparently hate us. I don't know why. We don't appear to be on any public email blacklists that I've found, and I've no evidence our server has inadvertently become a spam source or anything. I'm not aware of such trouble with other domains. I've not found any concrete steps I can use to diagnose the problem further.

Code: Select all

<example@outlook.com>: host mx3.hotmail.com[104.44.194.232] said: 550 SC-001
    (SNT004-MC6F10) Unfortunately, messages from 88.198.45.220 weren't sent.
    Please contact your Internet service provider since part of their network
    is on our block list. You can also refer your provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to MAIL
    FROM command)


User avatar
JTN
Elite
Posts: 450
Joined: Wed Jan 30, 2013 12:15 am

Re: Problems registering from Microsoft email addresses (outlook.com, hotmail.com, msn.com, live.com, etc)

Postby JTN » Sun Jul 09, 2017 11:57 pm

Thank you, I'd failed to spot that.

I poked that form, and now:
Our investigation has determined that the above IP(s) qualify for conditional mitigation. These IP(s) have been unblocked, but may be subject to low daily email limits until they have established a good reputation.