STOREPW is the password to be used by postmasters when executing CP/CMS commands and when storing files in the server by means of the PUTC command.
If you do not want to allow remote file storing nor remote CP/CMS command execution, just set this variable to ''. Note that CP/CMS commands typed at the server's console will always be honored.
Although this variable is available under non-z/VM versions of LISTSERV, for non-z/VM it is functionally equivalent to CREATEPW and should simply be left unset, or set to the special value *NOPW*.
This setting is obsolete and deprecated, as all POSTMASTER-restricted commands can now be validated with the postmaster's personal password. Setting STOREPW to the special value *NOPW* tells LISTSERV to disable STOREPW entirely.