email@example.com to forward email to firstname.lastname@example.org AND email@example.com
firstname.lastname@example.org to forward email to email@example.com AND firstname.lastname@example.org
email@example.com to forward to firstname.lastname@example.org AND user2@Gmail.com
what is the best way to create these distribution lists? The GMAIL address part is throwing me off. I thought about just creating distribution groups but it didn't work with an internal account AND "contact" on the same distr group.
Mail must not be kept on the server for any of these accounts.