Vendors that provide V8 sendmail in precompiled
form might or might not provide access to all the types of databases
that V8 sendmail supports. If your online
documentation lacks this information, you can run
sendmail with the
debugging switch to discover what it supports:
/usr/sbin/sendmail -d0.4 -btVersion 8.12.7 Compiled with: MAP_REGEX LOG MIME7TO8 MIME8TO7 NAMED_BIND NETINET NETUNIX NIS NEWDB QUEUE SCANF SMTP TCPWRAPPERS USERDB XDEBUG ...
In this implementation of sendmail the following
databases are available: regular-expression (the MAP_REGEX), Sun
nis (the NIS), the
database-map type (the NAMED_BIND), and the Sleepycat
btree types (the NEWDB). Many internal database
maps needed by sendmail are also automatically
included without being enabled. They are
switch. Note that
nisplus database maps are not supported by this
particular sendmail binary (neither HESIOD nor
NISPLUS was printed in the preceding output).
If you download and compile sendmail yourself,
you can include any supported databases. Support is declared in your
m4 Build file. For example,
the following includes support for the
Here, APPENDDEF is used to append the compile-time switch to any previous definitions. The -DDNSMAP is the compile-time switch that, when given a positive, nonzero value, enables inclusion ...