Skip to Content
Menu
This question has been flagged
2 Replies
1191 Views

I’m encountering an issue after configuring Office 365 for outbound email. When attempting to send an email from user@domain.com, I receive the following error:

“The server refused the sender address with error b’5.7.57 Client not authenticated to send mail. Error: 451 4.7.0 Temporary server error.”

It seems like there might be an authentication problem. Has anyone experienced this before or have suggestions on how to resolve it? Any help would be greatly appreciated!

Avatar
Discard

Which version?

Best Answer

do you have solved the issue?

Avatar
Discard
Author Best Answer

The latest docker image.

Avatar
Discard
Author

I have the Office 365 account login but still getting this error. Looking through the logs I see that the conditional access policy is not used. Is there anyone that can give advise. The calendar works. I think the login will work if I can send a request.

Related Posts Replies Views Activity
5
May 25
16654
0
Apr 25
516
1
Apr 25
678
0
Mar 25
648
4
Mar 25
8566