Hi, here are my Osticket details:

Server Information
Version osTicket v1.17 (1d8b790) — v1.17.5 is available
Web Server Software Microsoft-IIS/7.5
MySQL Version 5.5.65
PHP Version 8.0.24

I have configured the email following the Osticket guide, Microsoft Authorization Guide (https://docs.osticket.com/en/latest/OAuth2/Microsoft%20Authorization%20Guide.html#microsoft-authorization-guide).
I have configured the MTA with the same email that I had configured, but when I do the email test, I receive an email in MIME format. Can you help me?

This error is when a user makes a ticket and it is sent by email:

This error is when doing the email sending test from the administrator panel:

This is the email I receive:

This is a message in Mime Format. If you see this, your mail reader does not support this format.

--=_8fda2f9628547bef45f28566f2fa0cdf
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: base64

MTExMTEKUmVmLU1pZDogQmF4cmJFSS1lYXRBVi1BQUFBQUFBQUFBQUFBQUFBUDg0SjE0SUUt
c3Vwb3J0LnRpY0BjZW50cmVtcS5jYXQK
--=_8fda2f9628547bef45f28566f2fa0cdf
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: base64

PHA+MTExMTE8L3A+
--=_8fda2f9628547bef45f28566f2fa0cdf--

Thank you very much