devon_banks@comcast.net wrote:
> We currently have an internal email system using the domain
> <internal.com> . Our regular domain is <example.com>. Up until a
> month ago we were using sendmail and I thought I had figured out how to
> do the masguerading of the internal domain. But I am getting some of
> my users email bounced back because they are still showing in the
> headers as
> Sender : <user1@internal.com>.
>
>
> mydomain = example.com
> myorigin = $mydomain
> mydestination = $myhostname, localhost.$mydomain, localhost,$mydomain,
> example.com,localhost.localdomain,internal.com
>
> canonical_maps = hash:/etc/postfix/canonical
>
> masquerade_domains = internal.com
> ------------------------
> #postmap /etc/postfix/canonical
> ----------------------------------
> /etc/postfix/canonical
> @internal.com @example.com




Try adding this line:

local_header_rewrite_clients = static:all

--
Greg