We have an Exchange 2007 and we have users who uses MAPI and POP. Whoever uses MAPI is completely OK, but whoever uses POP can't send external mails, it seems that they can't relay on the connector. So I'm searching a command for the Exchange Management Shell to allow specific users to relay on a connector, but till now I have only find a command to allow any anonymous user.
PS. It would be pretty convenient if you could share also a command to see which users I have already allow to relay.
PS2. I'll write the command to allow any anonymous user to relay, in case someone need this.
Get-ReceiveConnector "Receive Connector Name" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"