smrsh applies to programs sendmail calls, but not to the spawned ones (e.g. procmail). At least not in my installation.
What was the user's shell?
As an example, I have an email-only account with smrsh as its shell. If I try to log in with that user (locally, via SSH from an allowed host, or even using "su <username>") I get kicked out immediately with the message,
Usage: smrsh -c command
On the other hand, if I run su <username> -c 'vacation -i' it will run the vacation program (which is allowed) and exit.
Then if I try something like su <username> -c "cat /etc/passwd" I get kicked out with: smrsh: "cat" not available for sendmail programs (stat failed)
Note that smrsh *is* willing to call interpreters, as long as the script itself is symlinked.
-- Kelson Vibber SpeedGate Communications <www.speed.net>
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