=====You wonder how to test and use your sieve scripts locally on your mailserver?=====

dry-run
<code>
sieve-filter -v -C -u user@domain.tld /var/vmail/domain.tld/user/sieve/scriptname.sieve 'INBOX'
</code>

execute (note the additional -e -W)
<code>
sieve-filter -v -C -e -W -u user@domain.tld /var/vmail/domain.tld/user/sieve/scriptname.sieve 'INBOX'
</code>