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still more forwarding hosts
Date: Mon, 24 Apr 89 17:32:44 EDT
The Symbolics mail utilities support the syntax
user_name%host.domain@forwarding-host to do what you've asked. We
use this all the time.
-- Chuck Fry
Symbolics Software Support
Sounds plausible, but when I test it by sending a message to me on my
sun account (fs1; which forwards eventually back to me at my symbolics)
I get from postmaster:
Unable to deliver letter to the following recipient:
DNA Mail failed to verify recipient miller%fs1.cam.nbs.gov@CAMVAX.nbs.DialNet.Symbolics.COM.
However, Is the problem with the symbolics or the vax?
You didn't say that your mail forwarding host was a non-Lispm! You also
didn't say that your Lispm thought it was in a Dialnet-derived domain, when
other hosts at your site use a real domain. You may wish to change your
Symbolics namespace to reflect the real domain name, since they're all
(logically, at least) on the same piece of Ethernet. Who knows, the VAX might
even recognize its own name.
FYI, here's the path your message took to reach me:
Received: from ELEPHANT-BUTTE.SCRC.Symbolics.COM by
VERMITHRAX.SCH.Symbolics.COM via INTERNET with SMTP id 97109; 25 Apr 89
Received: from STONY-BROOK.SCRC.Symbolics.COM by
ELEPHANT-BUTTE.SCRC.Symbolics.COM via CHAOS with CHAOS-MAIL id 376963; Tue
25-Apr-89 03:41:52 EDT
Received: from IU.AI.SRI.COM (SRI-IU.ARPA) by STONY-BROOK.SCRC.Symbolics.COM
via INTERNET with SMTP id 584099; 25 Apr 89 03:42:39 EDT
Received: from Warbucks.AI.SRI.COM by IU.AI.SRI.COM via SMTP with TCP;
Mon, 24 Apr 89 14:36:37-PST
Received: from vax.cam.nbs.gov by Warbucks.AI.SRI.COM with INTERNET ;
Mon, 24 Apr 89 14:34:08 PDT
Received: by vax.cam.nbs.gov id <firstname.lastname@example.org> ; Mon,
24 Apr 89 17:33:05 EDT
I.e. one hop from your VAX to SLUG@WARBUCKS.AI.SRI.COM, then redistributed
from there via Internet on the public networks, and Chaosnet within Symbolics.
Perhaps I should be a bit more explicit about our setup:
1) a few Symbolics (7.2) talking CHAOS & DNA.
2) a VAX (CAMVAX) running VMS (4.7) and Excelan's TCP/IP (EXOS).
3) a VAX (ENH) running VMS and Wollengong TCP/IP. This machine is
`directly' connected to internet.
So, our symbolices can only talk to themselves and CAMVAX. CAMVAX can
talk to all local machines (but uses host tables for internet
As a Symbolics employee, of course I'd like to see you running IP-TCP (our
name for it) on your Lispms; then you could send mail "directly" to the
Internet. Since you're not, and since your only path to the net goes through
Decnet to a VAX, it looks like you'll have to use DNA-format addresses, which
[I guess, pardon my limited experience with VAXen] might look like this:
But see below for some other possibilities.
To send email on internet, I telnet to camvax. (if the host is not in
the tables, I've got to forward to ENH; that probably isnt that relevent
right now, but ultimately for some addresses I'll have to forward
through 2 hosts (->camvax->enh) to send email from my symbolics)
So back to the failed mail: The symbolics obviously sent the message to
camvax who didnt understand it. It may be that the VMS mailer took it
instead of the EXOS daemon (?); the vms mailer certainly would not
understand the address while the exos daemon should.
Or maybe somebody forgot to change the "%" into a "@"?
Because you sent your test message from the Lispm to the VAX via DNA,
obviously the Decnet mailer would have handled the message before anything
else happened. Interestingly, I found this line in this message's headers:
So I suspect that even on the VAX, you have to send mail to the EXOS daemon
explicitly, and feed it addresses it can parse. Note that the daemon's
mailbox name PRECEDES the %, completely the opposite of what I told you
earlier. Maybe the answer is to use this format:
So close and yet so far away...
Good luck. I hope at least one of the suggestions above works!
-- Chuck Fry
Symbolics Software Support