Solaris

Hi,
we are running on Solaris 10 and I see that under
/usr/mail
-rw-rw---- 1 root mail 0 Nov 26 11:19 root
-rw------- 1 root mail 2 Nov 24 17:14 root.lock
-rw------- 1 root mail 2 Nov 27 09:26 root4_aGD6
-rw------- 1 root mail 2 Nov 27 09:26 rootHAaqyo
-rw------- 1 root mail 2 Nov 27 09:26 rootS9ayi5

looks like to root is locked , I would like to now

why and hwo can I unlock it ??
any Help is appreciated , Thanks

remove/rename the file. How did you know that sendmail is locking root?? :/

ok,
I can remove those files:
-rw------- 1 root mail 2 Nov 27 09:26 root4_aGD6
-rw------- 1 root mail 2 Nov 27 09:26 rootHAaqyo
-rw------- 1 root mail 2 Nov 27 09:26 rootS9ayi5

but I cannot remove even from the console
-rw------- 1 root mail 2 Nov 24 17:14 root.lock

in any case it told me " permission denied"

it is not that the root account is locked but no mail coming from root
and the sendmail is using more and more cpu power

I now stopped the service and restarted it, looks better but still I do not understand why root.lock was created and I cannot delete it, maybe a reboot would clean this but I am more interested why....

As root, chmod 700 <filename>
rm <filename>

even if I do it via the console I cannot chmod 700 nor rm root.lock...
it just says "permission denied"

Are you using root a/c?

what you mena with "root a/c" ?

After i tried it on a normal shell after becoming root I tried it via the system console as real root but still get the "permission denied" so I cannot chmod 700 .
I stopped sendmail service on Solaris 10 and tried again no result.
I be able to reboot it this Friday night but sofar I unable to fix it.