Tuning sendmail configuration

There are a number of configuration parameters you may want to change, depending on the requirements of your site. Most of these are set using an option in the configuration file or by editing the sendmail daemon invocation in the /etc/rc2.d/P86sendmail script. For example, the line ``OT3d'' sets option ``T'' to the value ``3d'' (three days). See ``O--set option'' for a complete listing of these options.

Most of these options have defaults appropriate for most sites. However, sites having very high mail loads may find they need to tune them as appropriate for that load. In particular, sites experiencing a large number of small messages, many of which are delivered to many recipients, may find that they need to adjust the parameters dealing with queue priorities.

When making any configuration file changes, see ``Reconfiguring sendmail''.

Timeout options syntax

All options that specify time intervals use a set of predefined units:

s

seconds

m

minutes

h

hours

d

days

w

weeks