Let's say users primary e-mail is mail1.domain1.com and it has also defined alias mail2.domain2.com
How can one send e-mail so the recipient sees it was sent from mail2.domain2.com?
The following thread indicates that this can be accomplished viewtopic.php?t=326&highlight=multiple+accounts+sender+address
however even when playing with "--sender" flag I still get the "no delegates permission" error. Even though I'm not trying to send out e-mail on behalf of other user but simply send it out as my own pre-defined e-mail alias.
Any pointers highly appreciated

Thank you.