I read the sieve-filter man page so I'll speculate. Granted, I still
don't fully understand how sieve and virtual users work as I have never
set this up.
"postmaster" is an alias of root and "vmail" is probably just a
directory name. So, from the root's command prompt, the environment
var
found
http://wiki.dovecot.org/LDA/Sieve.
I have linuxconf's vdeliver LDA habd off to procmail and then it does
all kinds of recipies.
I take it that Sieve is a way to script in logic right before the
"deliver" agent write the message. It mirrors what procmail can do to
some extent? Kind of?
-eric wood