[Dovecot] Sieve notify error?

[Láďa]

Hi,
I am playing with Sieve, everything is working nice except notify method.
Source script looks like this (generated with avelsieve):

require
["fileinto","envelope","reject","vacation","imapflags","relational","compara
tor-i;ascii-numeric","notify"];
if
#hashed-avelsieve-source
true
{
keep;
notify :method "mailto" :options "xxx at xxx.xx" :low :message "Nova zpráva.";

}

but with no success. Message is delivered fine, but notification is not
sent. Deliver logs only this:

deliver(xxx at xxx.xx): Apr 28 20:05:23 Info: sieve runtime error: Notify:
Generic Error

Thanks for any ideas how to get this working.

	Láďa