Here are some of the significant changes to sendmail made in version 8.14:
The system can be configured to automatically rebuild the sendmail.cf and the submit.mc configuration files. The required steps are documented in Automatically Rebuilding Configuration Files.
By default, the sendmail daemon runs in the new local daemon mode. The local–only mode only accepts incoming mail from the local host, for instance, mail from a cron job or between local users. Outbound mail is routed as expected, only the incoming mail is changed. The –bl option is used to select the local-only mode, also known as the Become Local mode. For more information about this mode, see the sendmail(1M) man page. For instructions on how to change back to the –bd or Become Daemon mode, see Using sendmail in Open Mode.
The –t and –u options to the makemap command now work as expected. The delimiter declared with the –t option is used as the delimiter, even with the –u option. Previously a space would be used as a delimiter if the –u option was used, regardless of the delimiter defined by the –t option. See the makemap(1M) man page for more information about these options.