Description

   The CONFIRM command is used to confirm for MAILSERV the execution
   of a command from a previous message.

   That is, for security your system administrators might have
   configured MAILSERV to require confirmation of certain commands.
   If you receive a message from MAILSERV saying that you need to
   send a

   CONFIRM cookie-string

   message back to MAILSERV in order for it to perform some
   particular command you previously requested, then if you want
   that command executed you must send back exactly

   CONFIRM cookie-string

   where COOKIE-STRING is the exact string MAILSERV tells you to
   send for that command.

   Note that you should send a new message back to MAILSERV
   containing the required CONFIRM command, rather than simply
   resending or bouncing MAILSERV's own message back to MAILSERV (to
   ensure that you hear about any errors in processing your CONFIRM
   command).

   Note that if you receive a message from MAILSERV talking about
   confirming a command that you did not send yourself, then that
   might mean that someone is attempting masquerade as you in
   e-mail and you might want to take this up with your system
   administrators.