[exim] malware and defer_ok

I'm having a few problems recently with clam bombing out and exim
rejecting all mails sent to it. What I want to know is two things.

1) Does anyone know of monitoring software for FreeBSD/Linux that will
restart the daemon if it dies.

2) If I put malware = */defer_ok in my check data ACL, will that accept
the mail and relay it out to the world, or will it accept and queue
until clam is back up. The latter would be better, but I'm not sure if
it is possible.

Regards,

-Ox