Forum Discussion
AmityWeb2021
Dec 22, 2021Copper Contributor
Trying to find help for 550 5.7.511 Access denied, banned sender
I run a mail server for many business clients of mine. Microsoft have blocked our IP address, so we cant send to Office365 email addresses. I get a bounce back saying: host cr-studio.mail.protec...
Fede-9139
Dec 30, 2021Copper Contributor
Linode support has kindly digested me this far and I am surprised to see how many people affected.
I have several servers affected in London and Frankfurt.
anyone with an email server in Linode US affected here?