OT: Reject non local users with sendmail, help

[Pentland G.]

I use the following code, with /etc/mail/usermap as a hash map generated
every 10 minutes.

Gary


LOCAL_CONFIG

# Usermap - for my code later
Kusermap hash -T<TMPF> /etc/mail/usermap

LOCAL_RULE_0

SLocal_check_rcpt

R$*                     $: $>3 $1
R$* < @ $=w . > $*      $@ $>user_unknown $1                    # Is in
@ class=w do passwd lookup

Suser_unknown
R$*                     $: $>3 $1
R$* <@ $+ > $*          $: $1                                   # Dicard
host part of address
R$+                     $: $(isalias $1 $: $1 $)                # call
isalias for stuff with a . in
R$+ @ $*                $: $>check_rcpt $1 @ $2 .               # If
isalias returns a full email address, jump through loop again
RRELAY          $#RELAY
R$+                     $: $(usermap $1 $: notfound $)          #call
passwd lookup for whats left
Rnotfound                       $#error $@ 5.1.3 $: "User does not exist
at this site"