Hi @amimulihsanmahdi ,
I did reconfigure new API keys and reset the Fluent SMTP connexion to Microsift Office.
The issue still persists.
Some emails are sent successfully and I still get some failures with the following code:
{
"code": 423,
"message": "Unauthorized",
"errors": [
"Unauthorized"
]
}
Any other suggestions?
Thanks a lot ??