Other user IDs requiring z/OS UNIX superuser authority

When a started procedure is used to start the following servers, daemons, and agents, the user must be a superuser [UID(0)] or permitted to BPX.SUPERUSER class profile.

Network Print Facility (NPF) queue manager
Sendmail Mail Transfer Agent (MTA)
SNMP agent (OSNMPD)

The File Transfer Protocol (FTP) daemon requires UID(0). For more information, see Security for the FTP server.

The following daemons are managed by the inetd server, and the user specified in file /etc/inetd.conf must be defined to RACF® with UID(0). For details on inetd, see z/OS UNIX System Services Planning. For details on individual daemons, see z/OS Communications Server: IP Configuration Reference.

z/OS® UNIX remote execution daemon (REXECD)
z/OS UNIX remote shell daemon (RSHD)
z/OS UNIX Telnet daemon