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diff --git a/static/unix-v10/man8/upas.8 b/static/unix-v10/man8/upas.8 new file mode 100644 index 00000000..8cf496bd --- /dev/null +++ b/static/unix-v10/man8/upas.8 @@ -0,0 +1,275 @@ +.TH UPAS 8 +.CT 1 sa_auto sa_mortals +.SH NAME +upas, rmail, translate \- mail delivery system +.SH SYNOPSIS +.B rmail +.I person ... +.PP +.B /usr/lib/upas/translate +.I name +.PP +.B /usr/lib/upas/auth +.I sender +.I receiver +.SH DESCRIPTION +Users send mail by +.IR mail (1). +Remote machines use +.I rmail. +Both call on +.I upas +programs. +.PP +Mail addresses are interpreted +according to rewrite rules as +described below. +When the addresses for a +.I mail +or +.I rmail +command have been interpreted, they are bundled by +network and passed to network-specific handlers, +such as +.IR route.inet . +.PP +.I Translate +looks up a mail +.I name +in an alias list (see +.IR mail (6)) +and places the result on standard output. +.PP +.I Auth +is called by +.I upas +to authorize mail delivery for each +.I sender, receiver +pair. +The mail is accepted if +the previous hop was a trusted gateway machine in +.FR /usr/lib/upas/gateways , +or all the machines in the source or destination path are in +.FR /usr/lib/upas/attlist . +.SS Rewrite rules +Each line of the file +.F /usr/lib/upas/rewrite +is a rule. +Blank lines and lines beginning with +.B # +are ignored. +.PP +Each rewriting rule consists of (up to) 4 strings: +.TP +.I pattern +A regular expression in the style of +.IR regexp (3). +The +.I pattern +is applied to mail destination addresses. +The pattern match is case-insensitive +and must match the entire address. +.TP +.I type +The type of rule; see below. +.TP +.I arg1 +An +.IR ed (1) +style replacement string, with +.BI \e n +standing for the text matched by the +.IR n th +parenthesized subpattern. +.TP +.I arg2 +Another +.IR ed (1) +style replacement string. +.PP +In each of these fields the substring +.L \es +is replaced by the login id of the +sender and the substring +.L \el +is replaced by the name of the local machine. +.PP +When delivering a message, +.I mail +starts with the first rule and continues down the list until a pattern +matches the destination address. +It then performs one of the following actions depending on rule type: +.PD 0 +.TP +.B >> +Append the mail to the file indicated by expanding +.IR arg1 , +provided that file appears to be a valid mailbox. +.TP +.B | +Pipe the mail through the command formed from concatenating the +expanded +.I arg1 +and +.I arg2. +.TP +.B alias +Replace the address by the address(es) specified +by expanding +.I arg1 +and recur. +.TP +.B translate +Replace the address by the address(es) output by the +command formed by expanding +.I arg1 +and recur. +.TP +.B auth +Call the program in expanded +.I arg1 +and authorize(reject) the mail if it returns a zero(non-zero) return code. +.PD +.PP +.I Mail +expands the addresses recursively until each address has matched a +.L >> +or +.L | +rule or until the recursion depth indicates a rewriting loop +(currently 32). +.PP +An +.L auth +operator is only applied once per address. +If no +.L auth +rule is encountered, the mail is accepted. +.PP +If several addresses match +.L | +rules and result in the same +expanded +.IR arg1 , +the message is delivered to all those addresses +by a single command, +composed by concatenating the common +expanded +.I arg1 +and each expanded +.IR arg2 . +This is meant to make less work of +a message to several recipients on the same machine. +For example, the rule +.IP +.L +([^!]+)!(.+) | "uux - -a \\s \\1!rmail" \\2 +.LP +causes +.L mail r70!pjw r70!ken +to generate the single delivery command +.LR "uux -a rob r70!rmail pjw ken" . +.SH EXAMPLES +A sample rewrite file: +.PP +.EX +.ta \w'([^!]+)[%@]([^!@%]+) 'u +\w'alias 'u +# local mail +[^!@%]+ translate "exec translate '&'" +local!([^!@%]+) >> /usr/spool/mail/\e1 +\el!(.+) alias \e1 +.EE +.PP +.EX +# convert %@ format to ! format +(_822_)!((.+)!)?([^!]+)[%@]([^!%@]+) \e + alias \e1!\e2\e5!\e4 +([^!]+)[%@]([^!@%]+) alias _822_!\e2!\e1 +_822_!(.+) alias \e1 +.EE +.PP +.EX +# special domains +[^!]+wisc\e.edu!.+ alias xunet!& +.EE +.PP +.EX +# network gateways +(csnet|bitnet)!(.+) alias inet!& +acsnet!.+ +.EE +.PP +.EX +# real networks +inet!([^!]+)!(.+) | "/usr/lib/upas/route.inet '\es' '\e1'" "'\e2'" +([^!]+)!(.+) | "/usr/lib/upas/route '\es' '\e1'" "'\e2'" +.EE +.PP +.EX# anything else goes to research +.* alias research!& +.EE +.SH FILES +.TF /n/bowell/usr/lib/upas/mkfile +.TP +.F /usr/lib/upas/namefiles +list of files to search +.TP +.F $HOME/lib/names +private aliases +.TP +.F /usr/lib/upas/rewrite +rewriting rules +.TP +.F /usr/lib/upas/attlist +known AT&T machines +.TP +.F /usr/lib/upas/gateways +machines that check mail authorization reliably +.TP +.F /usr/lib/upas/translate +alias lookup +.TP +.F /usr/lib/upas/route.* +mail interfaces to specific networks +.TP +.F /usr/lib/upas/route +interface to local (i.e. AT&T) Datakit network +.TP +.F /bin/mail +shell file that calls the mailer +.TP +.F /usr/lib/upas/send +actually delivery program +.TP +.F /bin/rmail +linked to /usr/lib/upas/send +.TP +.F /usr/spool/mail/* +mailboxes +.TP +.F /usr/spool/mail/mail.log* +delivery logs +.TP +.F /n/bowell/usr/lib/upas/mkfile +updates various mail and uucp files +.TP +.F /etc/passwd +authentication +.TP +.F /tmp/ma* +temp file +.TP +.F /tmp/ml* +lock file +.TP +.F $HOME/dead.letter +unmailable text +.SH "SEE ALSO" +.IR uucp (1), +.IR mail (1), +.IR mail (6), +.IR smtp (8) +.br +D. L. Presotto and W. R. Cheswick, +`Upas\(ema simpler approach to network mail', +this manual, Volume\ 2 |