v k via Postfix-users:
> When delivering mail, Postfix generates LDAP queries with query_filter
> mail=@domain, which are unnecessary in my environment. This becomes
> critical when sending to a mailing list group with many participants,
> as each member address generates an additional query, consuming
> extra time.
In the Postfix LDAP configuration file, specify the "domain" parameter.
domain (default: no domain list)
This is a list of domain names, paths to files, or "type:table"
databases. When specified, only fully qualified search keys with
a *non-empty* localpart and a matching domain are eligible for
lookup: 'user' lookups, bare domain lookups and "@domain"
lookups are not performed. This can significantly reduce the
query load on the LDAP server.
There is partial support to control the lookups of virtual_alias_maps.
Internal support exists, but it is not yet configurable.
Wietse
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