Problems with Sieve

[Peter Burggraef]

> > I'm searching for the strange behaviour of my cyrus21 (debian) server.
> > After running fine for 4 weeks, it stopped filtering my mails into some
> > and not all directories via sieve. Instead the mails were delivered  into
> > my usermailbox. I would like to know the reason? I have no idea. After
> > stopping und restarting the service, it worked properly. Should I restart
> > the service daily via cron?
>
> Do all of your sieve scripts parse correctly?  If not, that could explain
> it (if an lmtpd fails to parse a sieve script, the lex/yacc state may not
> be reset properly).  This is fixed due to the sieve bytecode in 2.2.

How can I find out?