Has anyone tried to use Azure Communication Services as mail service in Umbraco? I have the service up and running and sending mail by code from a simple console application works just fine. However same smtp configuration in Umbraco 13 results in an 5.7.3 Authentication unsuccessful, no idea why configuration in appsettings.json https://cdn.discordapp.com/attachments/1235628373582151740/1235628373783613460/image.png?ex=66351019&is=6633be99&hm=47c6067e99a4e95573e68fa4c1d4cfac2b28eb1a806e0098b4ba6ab2d40f14ba&

Just commenting here as it was the only result on Google with Umbraco and Azure Communication Services, did you manage to resolve your issue? For us it turned out to be a typo in the username, just wanted to confirm that we had to do no special setup to get ACS working with Umbraco, besides setting the correct port. Leaving the SecureSocketOptions on Auto (default value) worked for us.

Does Umbraco always honor the

From

in those settings above?