Impersonating the requested user

Sage CRM is unable to send emails from certain users, or it can only send emails to email addresses that are on the same domain as the sender, or all emails sent from Sage CRM appear to be from the same address.

This issue can be caused by the Sage CRM SMTP user having insufficient rights on the Exchange mail server to send emails using a different email address.

To send emails from Sage CRM as any user, you must enable the SendAs right on Exchange using PowerShell. For detailed information, see Granting the SendAs right to an SMTP user in the System Administrator Help.