Sometimes outgoing messages are frozen. In /var/exim_mainlog something like
... R=smart_route T=remote_smtp defer (-1): smtp transport process returned non-zero status 0x000b: terminated by signal 11
exim -qff doesn't help, Messages stays frozen. Google says only to add hosts_avoid_tls=* after driver=smtp in exim.conf. That doesn't help.
I do rc_exim stop, delete all files in /pkg/mail/db, rc_exim start, exim -qff and all frozen messages was delivered.
Hope it help somebody else.