Want sendmail applying aliases to 'cc:' field too

[Giorgos Keramidas]

On Fri, 10 Dec 2010 17:12:17 +0300, c0re <nr1c0re at gmail.com> wrote:
> I do use aliases file and I know what is it.
> But it looks like not this case.
> I want Cc: be rewritten like in aliases file defined in Cc: header,
> not only those one that comes in "RCPT TO:".
> And sendmail does not do it with Cc: field.
> Yes, recipient that in Cc: field do receive this mail, all ok in this
> way, but I want in MY mail Cc: field been rewritten as it is in
> aliases.
>
> I want to see in my mail this email headers
> to: user at domain.com
> cc: user3 at site2.domain.com
>
> Not this one:
> to: user at site1.domain.com
> cc: user3 at domain.com
>
> Looked at postfix - same thing, no such feature saw there in documentation.

That's because aliases do not actually 'rewrite' anything.  They merely
redirect the message.  Have a look at:

    FEATURE('masquerade_envelope')
    FEATURE(`allmasquerade')

But pay careful attention to the warning about `allmasquerade' in the
docs at `/usr/share/sendmail/cf/README'.