Scan-to-email using Office365 with MFA

[Jethro]

Trying to get scan-to-email working on a Ricoh MP C4503, using Office365 with Multi-Factor Authentication enabled.
Following guidance in "Option 2" of Microsoft documentation "How to set up a multifunction device or application to send email using Microsoft 365 or Office 365" at:
How to set up a multifunction device or application to send email using Microsoft 365 or Office 365 | Microsoft Docs

Have verified all network settings are correct, and that the customer's email address and password are valid. Verified customer's MX endpoint, Port 25, SSL and Authentication enabled. Connection test to SMTP server via copier control panel is successful.

Test scan fails with the following errors in the System Log:
#[dcs_nas(120)]20/12/16 11:50:49 SMTPC: received error code. [550] (8000) ERR:
#[dcs_nas(120)]20/12/16 11:50:49 SMTPC: connection closed. (801) ERR:

SMTP Err 550 "typically" means an invalid email address. As stated above I have verified the email address (using same address for sending and receiving test scan for now) and password are valid - did that by logging into the account.

Any ideas? Have any of you had any success with this?

[Mark Bbb]

Good question, same here.
We can't seem to set up a scan to office365 mail server anymore since about 6 months?
Is there a way to set it up without extra payment?
Is smtp2go a solution?
Oh so much thanks in advance.

[TonerMunkeh]

If you have SSL enabled port 25 won't work. It needs to be 465 or 587. Port 25 only works with no authentication.

[Mark Bbb]

Meanwhile i have the solution, thank you.

[Mark Bbb]

If you have SSL enabled port 25 won't work. It needs to be 465 or 587. Port 25 only works with no authentication.

Hoi T.M. but with the "SSL on" it is safe enough, i presume?

[TonerMunkeh]

I don't see any reason why not.

[rthonpm]

The account you're attempting to send from needs to have permissions for SMTP authentication, which is now disabled by default. The M365 admin for the tenant can enable it through the Exchange Admin Portal.