Milter-greylist

Hi,

I was changing the greylist delay time using a cron entry to have a
default delay time at different hour of the day:

Small delay (5m) if it's office time for my users with standard
whitelist time (3d).
Greater delay (30m) if it's not office time here and smaller whitelist
time (1d).

-- crontab
0 8 * * 1-5        /usr/bin/perl -i -pe 's{30m}{5m}g;s{1d}{3d}g'
/usr/local/etc/mail/greylist.conf
30 19 * * 1-5        /usr/bin/perl -i -pe 's{5m}{30m}g;s{3d}{1d}g'
/usr/local/etc/mail/greylist.conf

but.. sometimes milter-greylist fails to update and report errors:
Dec 10 00:45:19 05-sp002 sm-mta[23713]: mB9NjIcu023713: Milter
(greylist): to error state

While if I restart it, it works.

Any idea?


Thank you in advance,           \fer