I just tried another recipient but i got the same error. I also tested without the auth settings. The result was no error on the formular but I do not reciev any mail.
There was a post some time ago which is about the security option: Kirby->Email / SMTP Error (Timeout?) - #10 by jango Seems like 'security' => true is not correct, but 'security' => 'ssl' or 'security' => 'tls'. Check also if you are using the correct port (which seems to be the case here).
Thank you, now I was able to get some more information.
First of all, the authentication works fine:
2021-04-27 12:46:39 SERVER → CLIENT: 235 2.7.0 Authentication successful
But the error looks like this:
2021-04-27 12:46:39 SERVER → CLIENT: 554 5.2.0 STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Cannot submit message. 0.35250:3C040000, 1.36674:0A000000, 1.61250:00000000, 1.45378:02000000, 1.44866:18230000, 1.36674:0E000000, 1.61250:00000000, 1.45378:1D230000, 1.44866:A8010000, 16.55847:6F110000, 17.43559:0000000024020000000000000000000000000000, 20.52176:140FE18F1B00F01F00000000, 20.50032:140FE18F8B17F01F0B004536, 0.35180:93050000, 255.23226:5
2021-04-27 12:46:39 SMTP ERROR: DATA END command failed: 554 5.2.0 STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Cannot submit message. 0.35250:3C040000, 1.36674:0A000000, 1.61250:00000000, 1.45378:02000000, 1.44866:18230000, 1.36674:0E000000, 1.61250:00000000, 1.45378:1D230000, 1.44866:A8010000, 16.55847:6F110000, 17.43559:0000000024020000000000000000000000000000, 20.52176:140FE18F1B00F01F00000000, 20.50032:140FE18F8B17F01F0B004536, 0.35180:93050000, 255.23226:5
SMTP Error: data not accepted.
2021-04-27 12:46:39 CLIENT → SERVER: QUIT
I don’t know for sure (haven’t used it since my previous post) but I guess php’s error.log. Which file that is and where to find it depends on your server setup.