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SMTP
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1996-07-27
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smtp <subcommand>
These commands are used for the Simple Message Transport
Protocol service (that is, mail).
smtp batch [yes | no]
If set smtp will batch the commands into one frame. When off
only one command is sent and a response is waited for. Some old
and flaky smtp servers cannot handle more than one command at a
time. NOS can handle multiple. If you are not hindered by an
old smtp server, setting batch reduces bandwidth.
smtp bidcheck [ON | off]
Sets or displays status of smtp bidchecking. Default is ON.
If ON, incoming messages with dupe bids are rejected, with an
error message being sent to the sender.
NOTE: this command was deleted in Jnos 1.10K, as duplicates are
now merely ignored, and never returned to sender.
smtp dtimeout [<hours>] Default: 0
Displays or sets the number of hours a message will remain in
the smtp mqueue before being returned to sender. Delivery attempts
are made at "smtp timer" intervals. If <hours> is zero, the message
remains in mqueue indefinitely.
smtp gateway [<hostid> | none]
Displays or sets the host to be used as a "smart" mail relay.
Any mail sent to a host not in the domain.txt file or not found
via a nameserver query, will instead be sent to the gateway for
forwarding (if defined). To undefine the gateway, specify "none".
smtp kick [<hostname>]
Run through the outgoing mail queue and attempt to deliver any
pending mail to all systems, or just to <hostname> if specified.
This command allows the user to "kick" the mail system manually.
Normally, this command is periodically invoked by a timer whenever
NOS is running.
smtp kill <jobid>
Kill <jobid> and delete the message. If the job is "locked" by
the smtp client process, you will be asked to confirm the removal.
smtp list
List the current jobs. An "L" means locked and in progress. It
is wise to add in autoexec.bat a "del /spool/mqueue/*.lck"
command. As of JNOS 1.10 (x16), all '.lck' files are
automatically deleted on startup.
smtp maxclients [<count>]
Displays or sets the maximum number of simultaneous outgoing
SMTP sessions that will be allowed. The default is 10. Reduce
<count> if network congestion is a problem.
smtp maxservers [<count>]
Displays or sets the maximum number of simultaneous incoming
SMTP sessions that will be allowed. The default is 0, ie, no
limit other than the amount of memory available.
smtp mode [queue | ROUTE]
Sets the smtp delivery mode. If 'queue', all messages are left
in /spool/rqueue for external forwarding and handling. If
'route', messages are handled and, if for local, appended to a
mailbox, or if remote they are forwarded. Default = 'route'
smtp quiet [YES | no]
Enables or disables the inclusion of a beep in the message that
new mail arrived at this system. See 'smtp trace' below, to
enable the printing of a new-mail-arrived message.
smtp t4 [<seconds>]
Displays or sets a t4 timer for smtp client (outgoing) sessions
so that they will disconnect after a period of inactivity and
prevent lockups. Default = 0, i.e., no disconnect timeout.
smtp tdisc [<seconds>]
Displays or sets a disconect timer for smtp server (incoming)
sessions so that they will disconnect after a period of inactivity
and prevent lockups. Default = 0, i.e., no disconnect timeout.
smtp timer [<seconds>]
Displays or sets the interval, between scans of the outbound mail
queue. For example, smtp timer 600 will cause the system to
check for outgoing mail every 10 minutes and attempt to deliver
anything it finds, subject of course to the smtp maxclients
limit. Setting a value of zero disables queue scanning
altogether. This value is recommended for standalone IP
gateways that never handle mail, since it saves wear and tear on
the (floppy) disk drive. Default = 0
smtp trace [<value>]
Displays or sets the trace flag in the SMTP client, allowing you
to watch SMTP's conversations as it delivers mail. Zero (the
default) disables tracing. A trace value of 1 just enables the
"new mail for n5knx from <k5arh@w5ddl.ampr.org>". Larger values
produce more voluminous trace output.
smtp usemx [yes | NO]
Displays or sets a flag enabling or disabling MX record lookups.
This can be enabled if a domain server is available in the near
distance (reachable). It should be disabled (default) if no
domain server is in reach to satisfy the MX query. Note that
MX record handling is limited to the five highest-preference hosts.
Also, the smtp t4 timer must be set, in order to timeout on non-
responsive hosts.