12.30 on
page 1162) and Message-ID: (?§25.12.24 on page 1159) headers.
Some users (suchas root) should never be masqueraded because one always needs to
know their machine of origin. Such users are declared by using the EXPOSED_USER
mc macro. Note that prior to V8.10 sendmail, root was always exposed.
If you wish to have recipient addresses also masqueraded, cautiously use the allmasquerade
feature (?§17.8.4 on page 615).
17.4.3 MASQUERADE_DOMAIN mc Macro
Ordinarily, MASQUERADE_AS enables hosts in the local domains (as defined in the
$=w class, ?§22.6.16 on page 876) to be transformed into the masquerading host. It
also masquerades a list of additional hosts, but that list is normally empty.
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17.4 Masquerading | 601
If you wish to masquerade a domain other than your local one, you can use the
MASQUERADE_DOMAIN mc macro:
MASQUERADE_DOMAIN(`other.domain??)
Essentially, all that MASQUERADE_DOMAIN does is assign its argument to an
internal sendmail class, so you can list multiple domains in a single MASQUERADE_
DOMAIN statement:
MASQUERADE_DOMAIN(`domain1 domain2 domain3??)
Note that MASQUERADE_DOMAIN masquerades only the domain and not any
hosts under that domain. If you wish to masquerade all hosts under a domain
(including the domain itself), see the masquerade_entire_domain feature (?§17.
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