To perform delivery, sendmail often has to set
its uid to something other than
root's. The logic behind that
process is described in Section 12.2.2. The
-d11.2 debugging switch tells
sendmail to print the real and effective
user-ids that it is running under during
delivery:
openmailer: running as r/euid=real-user-id/effective-user-id
Also, the -d11.2 debugging switch causes
sendmail to print any error response that might
be produced by a delivery agent:
giveresponse: stat=status, e->e_message=what
Here, status is the number of the error that
caused delivery to fail (or succeed if it is 0) as defined in
<sysexits.h>. The
what is either the error message produced by the
delivery agent, or "<NULL>"
if the delivery agent was silent.
