Mail reply

[acknak_halflife@xxxxxxxxxxx]

I have multiple account and to reply to mail w/ the same "from" header as the
receiving mail, I have setup the following:

set alternates="email1|email2"
set envelope_from="yes"
unset reverse_name

But this is not working as my default mail address comes up as "To:"
everytime.

Any kind of help would be much appreciated.