By using rules it's possible to forward external and internal emails to other
external email addresses.

by doing so, the "sender information" in the forwarded email is the GW-Account. A
simple click on "reply" will then reply to the gw-mailbox with the forwarding rule,
not the original sender.

Is there a solution to forward with "original sender information"?

filling just the "to" field of the forwarding rule seems not to preserve the
"original sender information"...

Regards, Rudi.