Tracing system calls of sendmail

Dear All,

I need to trace all the system calls made and signals recieved by the process "sendmail". i use the strace command to do this, but in case of sendmail, the strace command fails. It shows something like, "operation not permitted".. how can i trace the system calls of sendmail? Please help me.. thanks

sOldFiSh

Maybe it's a trivial tip, but you probably need to be root to do this.

I was a root while trying with strace, but still i failed due to insufficient privilege, how can i gain the privilege to trace the system calls made by sendmail?

sOldFiSh