Petar Weigand

Hi Cheeny,

this is exactly what I did and those are screenshots from which you can see that SMTP AUTH is enabled on both my mailbox and my whole Office365 tenant but this didn't help.

Is there something else I can do or is there some additional troubleshooting logs which would provide a more detailed error message?

I have received  "Authentication: cannot authenticate." although SMTP AUTH is enabled for my mailbox and for my whole organization (see the attached screenshot). Is there something else that could cause this error?