military@cbnews.ATT.COM (William B. Thacker) (01/05/89)
I'm having a problem with one of the addresses on a mailing list
I maintain. I keep getting nuucp hate-mail like the following:
From nuucp Wed Jan 4 02:52 EST 1989
>From postmaster Wed Jan 4 02:52:01 1989 remote from arpa
Received: by cbnews.ATT.COM (smail2.6)
id AA27660; 4 Jan 89 02:52:01 EST (Wed)
To: cbnews!military
Subject: smtp mail warning
Status: RO
Your mail to orion.mc.duke.edu!bet is not yet delivered.
Delivery attempts will continue.
---------- diagnosis ----------
orion.mc.duke.edu [128.109.165.2]: Connection timed out (9 attempts)
---------- unsent mail ----------
Received: by cbnews.ATT.COM (smail2.6)
id AA08858; 1 Jan 89 13:01:19 EST (Sun)
Message-Id: <8901011301.AA08858@cbnews.ATT.COM>
Date: 1 Jan 89 13:01:19 EST (Sun)
From: military@cbnews.ATT.COM (William B. Thacker)
Now, I'm an unqualified novice, but I read this to mean that when
uucp calls up orion.mc.duke.edu, some problem occurs, and no information
is exchanged; the modem connection eventually times out. (BTW, the
number of attempts, in this case, 9, is variable from message to message).
Am I then correct in my guess there's nothing I can do about it but
remove the name from the mailing list ?
Apologies if this is the wrong group for such a query.
- - - - - - - - - - - - - - - - - - - - - - -
Bill Thacker moderator, sci.military military@att.att.com
"War is a matter of vital importance to the State; the province of life
or death; the road to survival or ruin. It is mandatory that it be
thoroughly studied." - Sun Tzutim@dretor.dciem.dnd.ca (Tim Pointing) (01/12/89)
In article <2888@cbnews.ATT.COM> military@cbnews.ATT.COM (William B. Thacker) writes: > > I'm having a problem with one of the addresses on a mailing list > I maintain. I keep getting nuucp hate-mail like the following: > > ... > Your mail to orion.mc.duke.edu!bet is not yet delivered. > Delivery attempts will continue. > ---------- diagnosis ---------- > orion.mc.duke.edu [128.109.165.2]: Connection timed out (9 attempts) > ---------- unsent mail ---------- > ... > Now, I'm an unqualified novice, but I read this to mean that when > uucp calls up orion.mc.duke.edu, some problem occurs... I think that you'll find that the attempt to forward the mail is actually done over the Internet (not UUCP) as evidenced by the Internet address in the diagnosis (i.e. [128.109.165.2]). What is happening is that when the system tries for send the mail to Duke, there is a long enough delay in establishing the connection over the Internet that the system trying to connect gives up before a reply comes from the other end. Some systems, such as ours, require several gateways to actually get to most other hosts on the Internet.) > Am I then correct in my guess there's nothing I can do about it but > remove the name from the mailing list ? Often, the most important factor causing the "Connection timed out" message is the number of gateways which your Internet packets have to go through to get to the other system. One way of reducing this is to use an intermediate host to pass the mail on the the desired host. How do you find such a host? In the case of Duke, I would choose another host at Duke but not so deeply domain-ized. (I know that, strictly speaking, domain != routing, but, in practice, this is usually the way packets go) For the above host, I might choose "cs.duke.edu" [128.109.140.1]. Thus, the new address would be "cs.duke.edu!orion.mc.duke.edu!bet". Give it a try and see if it works any better. Good Luck! -- Tim Pointing, DCIEM {decvax|ihnp4|watmath}!utzoo!dciem!ben!tim uunet!mnetor!dciem!ben!tim or nrcaer!dciem!ben!tim tim%ben@zorac.dciem.dnd.ca or tim@ben.dciem.dnd.ca