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- ======= NOSview [301]
- popmail
- =======
-
- [N.B. This is different from the 'pop' command].
-
- The Post Office Protocols (POP2 and POP3), are mail protocols
- designed for use in networks containing hosts that are normally
- turned off when they are not in use. In this environment it is
- not possible for an SMTP mail server to deliver mail to these
- hosts because they are not always available.
-
- The solution to this problem is to designate a mailbox server
- that is available to the network at all times and can accept SMTP
- mail for other hosts. When a host comes on-line it uses POP to
- access the mail in its mailbox(es) on the mailbox server.
-
- The advantage of using a POP server at an area mail gateway is
- that when mail arrives at the gateway for a station that may not
- be available, the gateway does not have to waste time trying to
- establish a connection with that station. Instead it accepts the
- mail and places it in the addressee's mailbox, just as if the
- addressee were a normal user on the gateway system (that is, this
- is the same thing that is done with AX.25 BBSs).
-
- As POP2 and POP3 are different and incompatible protocols, both
- the POP2 and POP3 servers should be started, to handle all POP
- requests from clients.
-
- The POP server requires one data file called /popusers.
-
- The POP protocols are very simple, with minimal error handling.
- When an error is encountered, an error message is generated and
- then the connection is terminated. You then have to re-establish
- a connection to continue.
-
-
- _________________________________________________________________
- popmail addserver <host> [<seconds>] [<hh:mm-hh:mm>] <protocol>
- <mailbox> <username> <password>
- _________________________________________________________________
- Add <host> as a pop server. When <seconds> is given, a timer is
- started to query the host with that interval for mail.
-
- If not specified no quering to the pop host will be started. You
- have to do that manually with a 'kick'.
-
- When <hh:mm-hh:mm> is given then only in that exact timeframe are
- queries to the host made (allowed).
-
- Protocol is either POP2 or POP3, depending on the mail service
- the host is providing. Note: pop2 is superceded by pop3.
-
- <mailbox> is the mailbox name on the host from which mail has to
- be picked up.
-
- <username> and <password> are this system's validation parameters
- for the host (in /popusers).
-
- Note that on entering this command the host name is looked up.
- If non existent an error message is presented.
-
- >> Example: (all on one line):
-
- popmail addserver ns9bob 1800 00:00-03:00 pop3 ns9liz ns9liz
- lizpasswd
-
-
- _________________________________________________________________
- popmail dropserver <host>
- _________________________________________________________________
- Drop host from the list of pop servers to be queried. All
- references to the entry are deleted from the current system.
-
- >> Example: popmail dropserver ns9bob
-
-
-
- _________________________________________________________________
- popmail kick
- _________________________________________________________________
- Kick the local POP client, to get mail from the server. This
- command is needed when no interval is specified with the 'popmail
- addserver' command.
-
-
-
- _________________________________________________________________
- popmail list
- _________________________________________________________________
- List the current popmail server table.
-
-
-
- _________________________________________________________________
- popmail quiet [on|off] Default: off
- _________________________________________________________________
- Display or set the POP quiet flag.
-
- This flag determines whether the bell sounds when the system
- announces that incoming mail has arrived. When quiet is set to
- 'off' you hear the bell.
-
- >> Example: pop quiet on
-
-
- _________________________________________________________________
- popmail trace [<level>]
- _________________________________________________________________
- Display or set the trace level of POP sessions.
-
- <level> = 0: no trace
- 1: serious errors reported
- 2: transient errors reported
- 3: session progress reported
-
- All trace output goes to the session log file.
-
-