Relevant Products: Exclaimer Cloud - Signatures for Office 365
When an email message is addressed to a distribution group (either in the 'To:' or 'CC:' fields) the message is delivered to the recipients Junk E-mail folder instead of the Inbox. At the same time, the Return-Path header on the received message is blank and only contains anchor tags.
If the group is synchronised to Office 365 from an on-premise Active Directory, set the attribute ReportToOriginator to TRUE in the properties of the distribution group in the on-premise Active Directory site.
These changes will not take effect until the on-premises Active Directory domain has been synchronised and replicated in Office 365.
Further information relating to this can be found in the following Microsoft KB article.
If no on-premise Active Directory exists, the group properties can be amended in Office 365 using Windows Powershell.
1. Open Windows PowerShell and run the following PowerShell command to create a variable which will gather logon credentials:
When you press Enter, you are prompted to enter Office 365 administrator credentials.
2. Run the following Powershell command:
3. Run the following Powershell command:
4. If the value returned is False, run the command below to change it to True: