Changing the values of options

Options can be overridden using the -o or -O command line flags. For example:

sendmail -oT2m

sets the T (timeout) option to two minutes for this run only; the equivalent line using the long option name is:

sendmail -OTimeout.queuereturn=2m

Some options have security implications. Sendmail allows you to set these, but relinquishes its setuid root permissions thereafter.