[exim] Unable to modify exim.

Hello;

I tried updating exim recently and got a Operation Not Permitted.
A friend had someone secure the box a bit, and not I cant modify
delete or do anything with the program exim. I checked for chflags
that may have been on, but there are none. Anyone have any ideas
on how to get over this problem?

The server is running FreeBSD 5.4.

Thanks

Jason
cavej@???