[Dovecot] sieve notify and lmtp

[Lampa]

Hello,

i've setup sieve script which send notify to user (user at domain.com).
But user at domain.com is alias user at domain.com and
user at anotherdomain.com. LMTP delivers notification only to
user at domain.com but not to user at anotherdomain.com. How to force send
notification over smtp (which will be delivered to both) or i must use
to=user at anotherdomain.com in notify ?

Thank you for your advices.

Lampa