[net.news.sa] net.news.map path info

honey@down.FUN (code 101) (08/29/84)

I applaud the effort now under way to distribute path data in
net.news.map.  Timely and accurate information will go a long way to
improving mail handling in the anarchy net.  I expect the quality of
the data will improve over time, nonetheless, I have stumbled across
a few serious problems, along with some minor syntax errors.

    Zehntel claims to be aliased as alpha, while alpha is
    well known to mappers and to various btl hosts.

    Sri-tsc declares some uucp links, but is reachable only via the
    arpanet, leading to a familiar ambiguity.  Some utah sites have the
    same problem.

    The following local hosts at sun are not unique:
	icarus		btl, well known to mappers.
	ariel		btl, well known to mappers.
	orion		btl, well known to mappers.
	phoenix		btl, well known to mappers.
	merlin		btl, well known to mappers.
	phobos		btl, well known to mappers.
	mars		btl, may be an informal alias.
	venus		btl, may be an informal alias.
	west		btl, may be an informal alias.

	medusa		masscomp local host.
	babel		masscomp local host.
	asylum		masscomp local host.

	comet		instructional vax at ukc.
	galileo		somewhere in italy, someday.
	rigel		astronomy department at u. of chicago.

    "I doubt it" local hosts at sun:
	emerald		same as teklabs!azure!crimson!emerald?
	prodigal	same as bang!prodigal and cadre!prodigal?
	vixen		same as linus!vixen?
	et		same as axiom!et?
	saturn		same as hplabs!saturn?
	titan           same as wbux5!titan or utcsrgv!titan?  for that
			matter, is wbux5!titan  == utcsrgv!titan?

    Both sun and masscomp are vexed by sendmail syntax; they would like
    mail from, say, sun!medusa!user to look like it came from sun!user.
    I'm sure there's a way to do this -- can anyone help?  A correct
    solution would build an appropriate unix-mail From line (in
    addition to the header-phile From: or Sender: line).

	Peter

piet@mcvax.UUCP (Piet Beertema) (09/04/84)

<...>

    >The following [local] hosts [at sun] are not unique:
	>icarus		btl, well known to mappers.
	>ariel		btl, well known to mappers.
	etc.
In other words: it's more than time to switch to domain addressing.
Creating unique sitenames in a worldwide network is getting harder
every day. And (re)routing would get a lot easier without every
backbone having to know paths to all sites. Even a crude splitting
into domains like usa, eur, aus etc. would do a lot of good already.
-- 
	Piet Beertema, CWI, Amsterdam
	...{decvax,philabs}!mcvax!piet

mark@cbosgd.UUCP (Mark Horton) (09/07/84)

    Both sun and masscomp are vexed by sendmail syntax; they would like
    mail from, say, sun!medusa!user to look like it came from sun!user.
    I'm sure there's a way to do this -- can anyone help?  A correct
    solution would build an appropriate unix-mail From line (in
    addition to the header-phile From: or Sender: line).

It really isn't hard to arrange this.  I'll enclose the ruleset 13 from
cbosgd.  The 3rd line is the one that does this, the others are local
hacks to deal with other flavors of syntax.  We use this to hide our
local Suns from the outside - I'm really on cbpavo right now, but this
will appear to come from cbosgd.

R$+			$:$>5$1			convert to old style
R$=U!$+			$2			strip local name
R$+<@$=S>		$1			mark@cbpavo -> mark
R$+<@$+.UUCP>		$2.UUCP!$1		xxx@foo.uucp -> foo.uucp!xxx
R$+			$:$U!$1			stick on our host name
R$=U!$=R:$+		$:$1!$3			ucbvax!ucbvax:xxx => ucbvax!xxx

Note that this is the easy part.  For an organization to make this work,
all the machines must be centrally administered.  In particular, it must
be true that if user@workstation exists, user@gateway also exists and
is owned by the same person.  (Watch out for "root" and other non-human
logins.)  Also, people must arrange that mail to their name on the gateway
will be forwarded to their favorite workstation.  Sharing the same password
file among all the machines is one easy way to make this work, but you
still need forwarding from the gateway.