SYSERR(root): hash map "Alias0": unsafe map file /etc/aliases.db: Group writable directory
NOQUEUE: SYSERR(nobody): /etc/mail/sendmail.cf: line 0: cannot open: Permission denied

google around already and followed the permission setting already but the problem still exist.

set sendmail.cf permission to 644 already
/etc also set the permission already.

Anything else that i miss out??