hello,
I have submitted a few weeks ago problem on sieve 
implementantion but there not useful solution for me at this time. I think that 
it depend on my mail architecture :
_One NFS server
_two dovecot POP/IMAP server (for pop and webmail 
access) : the POP/IMAP don't run dovecot LDA
_two delivery serveur with exim and dovecot LDA : 
they communicate with external relay servers and deliver mail in 
box.
 
The mailbox format is maildir and the dovecot 
version is 1.0 rc2
Question :
On which server and how to implement sieve for 
dovecot.
 
Regards
 
Amadou TOURE