${LOOKUP_DOMAIN($sender_address_domain,
{${if and {{match_local_part {$sender_ident} {+dom_users}} \
{match_local_part {$sender_address_local_part} \
${LOOKUP_DOMAIN($sender_address_domain,
{${if and {{match_local_part {$sender_ident} {+dom_users}} \
{match_local_part {$sender_address_local_part} \