# SMTP/README 14/9/87

ACSnet_SMTP is an ACSnet spooler which passes all mail messages to
/usr/lib/sendmail (with appropriate options) for delivery.  It can be used to
place foreign ACSnet nodes on the network which are accessible via SMTP
(sendmail) but do not run ACSnet directly.

Only mailer messages are passed to sendmail, stater messages are ignored, all
other handler types are returned with an error message.  If an
acknowledgement is requested by an incoming message the ACK is generated by
ACSnet_SMTP from the connecting node before the message is passed to
sendmail.

Once ACSnet_SMTP is installed foreign ACSnet nodes can be created with
acsstate(1) and ACSnet_SMTP can be invoked as the "spooler", e.g.
	add	fornode	foreign
	spooler	fornode	/usr/spool/ACSnet/_lib/ACSnet_SMTP
	link	fornode,thisnode
When this is done all mail messages that arrive at "thisnode" destined for
"fornode" will be passed to sendmail to delivery.

ACSnet_SMTP only provides support for getting mail *out* of ACSnet to sendmail.
To feed mail into ACSnet from foreign SMTP nodes you must use sendfile(1)
with the "-s" and "-o" options to change the sender and origin of the 
message, e.g.
	sendfile -ofornode -spjw -amailer piers@basser.cs.su.oz

			Peter Wishart, Computer Science, ANU <pjw@anucsd.oz>
