[Exim] problem after disk full

hi,

we ran out of diskspace on /var/spool yesterday evening while some 200
messages where being spooled for sending. When I noticed this There are a
number of messages in /input, and from the manual, I think they must be
"frozen". Restarting exim does not do the job of thawing them and I am
unsure of the syntax of the auto_thaw option to add in configure. Can anyone
help, please?

thanks very much,

mark