4.4.0-42.62) is not available, but a newer one is (4.4.0-142.168). We redirected you there.
/usr/sbin/perdition.managesieve is in perdition 2.1-2build1.
This file is owned by root:root, with mode 0o755.
It is a symlink to /usr/sbin/./usr/sbin/perdition.imap4s