Sendmail Wpon't work

[Geoff Shang]

Hi:

Just to clarify something here.  The end-of-file character in Unix is
control-D, not control-Z.  Control-Z will often let you suspend programs,
particularly useful if you're on a remote connection.  You can then resume
such a suspended program using the fg command.  You can have multiple
programs suspended and foreground any of them at will by using the command
"fg %number" where number is the number you see when you suspend it.  You
can also use "bg" to background a task where this is appropriate.  You can
list all suspended processes with the "jobs" command.  If you try to logout
with jobs suspended, the shell will warn you that "You have stopped jobs".
If you logout again, it will let you do it and kill off the jobs.  Finally,
if you want to kill a suspended job, you can use "kill %number" where
number is the job number as described above.

Hope this helps.

Geoff.