[Users] alias configuration possible?

[Paul]

Hi!
Is it possible to configure multiple e-mail alias per account, so I
don't have to type each time my alias? Another reason is that I
recognized if I receive an MDN, and I want to confirm it manually, it
warn me that I'm not the official receiver (because it was sent to an
alias). If i confirm the MDN, the receiver get also my original e-mail
account name: "Original-Recipient: rfc822;ALIAS at example.com
Final-Recipient: rfc822;ACCOUNTNAME at example.com" - maybe I can avoid
this after setting up the alias adresses?

Regards,
Paul