.forward could not work afer upgrading the sendmail 8.12.8

Obrother

Who can help me?

But the sendmail can work well only .forward could not work.

sendmail.cf

# grep forward sendmail.cf
OForwardPath=$z/.forward.$w+$hz/.forward+$hz/.forward.$wz/.forward
# are group-writable :include: and .forward files (un)trustworthy?
# now delete the local info -- note $=O to find characters that cause forwarding
# short circuit local delivery so forwarded email works
# resolve fake top level domains by forwarding to other hosts
# prepend an empty "forward host" on the front