vixie@decwrl.dec.com (Paul A Vixie) (04/11/90)
>> What is IDA???? >> >> thanks, Terry IDA is a set of patches to sendmail that enhance it in a lot of useful ways, the most important of which is that you can do a DBM lookup on something like a pathalias database from a RHS. Thus I was able to add smart pathalias routing to my sendmail.cf easily: # # uunames is built from the output of the command of the same name # it is used to prevent auto-routing if the first-hop is already a # neighbor -- just in case pathalias doesn't know about all of your # neighbors # OKN/usr/lib/mail/uunames # # uupaths is the output of pathalias # OKP/usr/lib/mail/uupaths # # random junk needed to glue the logic together # CA@ CZUUX UUCP ### ### neighbor hack ### S17 R$+<@$-.$=Z> $:$(N$2$@$1$:@!$1<@$2.UUX>$) try neighbor R$=A!$+ $@$2 found @!, strip it, ret R$+<@$+>$* $@$1<@$2>$3 still focused, ret R$+ $@@!$1 return with @! prefix ### ### general hack ### S18 R$+<@$-.$=Z> $:$(P$2$@$1$:@!$1<@$2.UUX>$) try path R$=A!$+ $@$2 found @!, strip it, ret R$+<@$+>$* $@$1<@$2>$3 still focused, ret R$+ $@@!$1 return with @! prefix S0 [...] # # resolve UUCP domain # # Here we look for fakes (labrea!$- get sent out via SMTP, for example), # then we look for our neighbors (in a database built from "uuname" on # a fairly regular basis), then we look for a pathalias route. Note that # we do NOT second-guess a path; only the first hop in a path is eligible # for routing and we have a separate check for neighborness just in case # pathalias shows a neighbor as other than neighbor!%s. The only time # that we route, in other words, is when the alternative is bouncing the # message. This is ROUTING, not REROUTING. [vix, 6jan90] # R$+<@$-.$=Z> $:$>3$(F$2$@$1$:$1<@$2.UUX>$) try fakes R$+<@$-.$=Z> $:$>17$1<@$2.UUX> try neighbor R@!$-!$+ $#uux $@$1 $:$2 found it R$+<@$-.$=Z> $:$>18$1<@$2.UUX> try path R@!$-!$+ $#uux $@$1 $:$2 found it R$+<@$-.$=Z> $#error $:uucp name <$2> unknown at $U -- Paul Vixie DEC Western Research Lab <vixie@decwrl.dec.com> Palo Alto, California {ames,att,uunet}!decwrl!vixie