We use the prtg network monitor. I want to to configure notification for a distribution group email address. When the prtg uses a user address the test email is sent, but when the email address is a distribution group on o365 email is not received by O365. When I use a powershell script on the prtg server , a email is received by o365. the prtg log does not show any errors. The name of group is [email protected] ( a long name) So, the problem is in the prtg software, because an email can be recived from a powershell script. May I get any help?