Hi,

I wanted to send un email from a ticket, and I got an error that is translated in the log by this:

2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3] Error sending mail
2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3]    SMTP Server : smtp.office365.com
2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3]    SMTP Port : 587
2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3]    Mail stored in Database : #26382
2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3]    PHPMail error : SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Cannot submit message. 0.35250:0A003C89, 1.36674:01000000, 1.61250:00000000, 1.45378:02000000, 1.44866:00000000, 1.36674:7A000000, 1.61250:00000000, 1.45378:05000000, 1.44866:00140000, 1.36674:0A000000, 1.61250:00000000, 1.45378:16000000, 1.44866:7C610000, 1.36674:0E000000, 1.61250:00000000, 1.45378:95610000, 1.44866:B6050000, 16.55847:89260000, 17.43559: SMTP code: 554 Additional SMTP info: 5.2.0
2021-01-15 11:30:28.637 ** ERROR ** [V8.6.3]    PHPMail debug : 

And the note, that I asked to add to the ticket was added either.
Usually, it works fine.

What shall I do?

Regards,
MCanuto