NEWDB
Support Berkeley db(3) databases Tune with confMAPDEF
The db(3) form of database uses a
single file and can be shared by different
architectures. If you intend to support aliasing in
an efficient manner, you should at least define this
NEWDB (or the NDBM described earlier) in your
Build m4 file. The
db(3) routines are used to
look up aliases and are the routines used by the
User Database (userdb on page
942). They can also be used to declare
hash and
btree type maps (The type on page 882) with the
K configuration
command.
The db(3) libraries have overcome many of the limitations of the earlier ndbm(3) libraries. If possible, you should get and install the db(3) libraries before you build sendmail (see The Sleepycat DB Library on page 104 for a guide to downloading these libraries).
If you are running a precompiled
sendmail binary, you can use
the -d0.1
debugging command-line switch (-d0.1 on page 542) to determine whether NEWDB support
is included (if it appears in the list, support is
included).
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