sendmail, 4th Edition

MASQUERADE_DOMAIN mc Macro

Ordinarily, MASQUERADE_AS enables hosts in the local domains (as defined in the $=w class, $=w on page 876) to be transformed into the masquerading host. It also masquerades a list of additional hosts, but that list is normally empty.

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 (FEATURE(masquerade_entire_domain) on page 631).

Also note that MASQUERADE_DOMAIN has special meaning for the limited_masquerade feature (FEATURE(limited_masquerade) on page 625). When that feature is declared, only the domains listed under MASQUERADE_DOMAIN will be masqueraded.