Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Configuring HP-UX Bastille: Interview
Bastille Configuration Questions and Explanations for HP-UX
Appendix B984
The rbootd daemon is used for a protocol called RMP, which is a
predecessor to the "bootp" protocol (which serves DHCP). Basically, unless
you are using this machine to serve dynamic IP addresses to very old
HP-UX systems (prior to 10.0, or older than s712's), you have
no reason to have this running.
Miscellaneous
Daemons
Q: Would you like to disallow remote X logins? [Y]
XDMCP is an unencrypted protocol which allows remote connections to an
X server. This protocol is commonly used by dumb graphics terminals and PC-based
X-emulation software to bring up a remote login and desktop.
Sendmail Q: Do you want to stop sendmail from running in daemon mode? [Y]
[Y]
You do not need to have sendmail running in daemon mode to send
and receive email, and unless you have a constant network connection,
you probably cannot run sendmail in daemon mode. Daemon mode means that
sendmail is constantly listening on a network connection waiting to
receive mail.
If you disable daemon mode, Bastille will ask you if you would like to
run sendmail every few minutes to process the queue of outgoing mail.
Most programs which send mail will still do so immediately, and
processing the queue will take care of transient errors.
If you receive all of your email via a POP/IMAP mailbox provided by your ISP,
you may have no need of daemon-mode sendmail, unless you're running a
special fetchmail-style POP/IMAP based retrieval program. For instance, you
can turn daemon mode off if you read your mail via Netscape's common
POP/IMAP read functionality. The only reason to run sendmail in daemon
mode is if you are running a mail server.
Sendmail Q: Would you like to run sendmail via cron to process the queue? [N]
[Y]
Should sendmail run every 15 minutes to process
the mail queue, processing and sending out e-mail? If this machine does
not run sendmail in daemon mode, you may want to do this to make
your outbound mail more reliable.
In most cases, mail queue processing is not required since most mailer
programs activate sendmail to process their particular message. A message
usually only gets written to the queue (and thus needs a cron entry) if
sendmail has trouble delivering it. Example: the receiving mail server is down.
NOTE: Sendmail will not accept inbound connections while processing the mail queue.
NOTE: The 15 minute interval can be easily changed later, see crontab(1).