[exim] queue runs question

Hello,

A very simple (and sorry if too obvious) question.

The docs state:
If you do not want queue runs to occur,
omit the -qxx setting on the daemon’s command line

If queue runs are disabled, does exim try to re-send emails which are in
queue when their retry times come? Or does it mean that emails in queue
will never get sent if -qxm is not given on the command line?

Thank you in advance!

--
Zbigniew Szalbot