I had simple mail server and my question is about bandwidth usage of e-mail aliases.
So i had eq email@example.com foward: firstname.lastname@example.org
And question is mail demon do:
[MAIL] -> @mysvr.com /* recive e-mail "means read all data" and foward "resend" to @gmail.com */
[MAIL] -> @mysvr.com /* header send "please foward to @gmail.com connecion close" */
[MAIL] -> @gmail.com /* recive e-mail */
Please not R.T.F.M ;)