If you use local files in
postmap(1) format, then
local_recipient_maps expects the following table format:
In the left-hand side, specify a bare username, an
"@domain.tld" wild-card, or specify a complete "[email protected]"
You have to specify something on the right-hand side of
the table, but the value is ignored by
If you use lookup tables based on NIS, LDAP, MYSQL, or PGSQL,
local_recipient_maps does the same queries as for local files
postmap(1) format, and expects the same results.
With regular expression tables, Postfix only queries with the
full recipient address, and not with the bare username or the
NOTE: a lookup table should always return a result when the address
exists, and should always return "not found" when the address does
not exist. In particular, a zero-length result does not count as
a "not found" result.