debian.org/stable/mail/
maildrop.html.
Note that despite our description of maildrop(1) in this section, you can use this
FEATURE(local_procmail) to install other programs in the role of the local delivery program.
But test carefully before releasing any new program in this role.
17.8.26 FEATURE(lookupdotdomain)
Enable .domain secondary access.db lookups V8.12 and later
Normally, lookups of hosts in the access database (?§7.5 on page 277) are literal. That is,
host.domain is looked up first as host.domain and then as domain. For example, the host
hostA.CS.Berkeley.edu would first be looked up as hostA.CS.Berkeley.edu, then as
CS.Berkeley.edu, then as Berkeley.edu, and lastly as edu. None of the components is looked
up with a leading dot. That is, host.domain??™s second lookup is domain, not .domain.
If you wisheachlookup to also include a lookup of the domain part witha dot prefix, you
can declare this FEATURE(lookupdotdomain):
FEATURE(`lookupdotdomain??)
Once declared, all lookups of hosts in the access database will include another lookup with
the domain part prefixed with a dot. That is, for example, without lookupdotdomain
declared, the lookups of hostA.CS.Berkeley.edu will look like this:
hostA.CS.Berkeley.edu
CS.Berkeley.edu
Berkeley.edu
edu
But with lookupdotdomain declared, the lookups of hostA.CS.Berkeley.edu will look like this:
hostA.
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