Domain_match_url MTA option
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Direct LDAP domain lookup URL (domain_match_url)
The domain_match_url option may be used to specify an additional, special lookup to perform when looking for domains during a $V rewrite rule template LDAP lookup; (that is, a lookup in addition to the regular lookup for normal domains triggered by $V). This additional lookup will be performed only if the check for a normal, hosted domain fails. The main use of this option is to enable use of vanity domains, vanity domain being disabled by default. To enable the use of vanity domains, in Schema 1 mode set
domain_match_url=ldap:///$B?msgVanityDomain?sub?(msgVanityDomain=$D)
Note that use of vanity domains is NOT RECOMMENDED!
See also: MTA options, Option value syntax, Getting option changes to take effect, MTA options, listed alphabetically, MTA options, listed by functional groups, Direct LDAP domain lookup options, Direct LDAP lookups, Rewrite rule $V LDAP lookup.

