From: "Alberto Meregalli (SIC)" <meregalli@cesi.UUCP>
Newsgroups: vmsnet.mail.mx
Subject: Re: Is MX over UCX lazy?
Date: 13 Oct 1992 17:49:17 +0100
Organization: Mx-List<==>Vmsnet.Mail.Mx Gateway
X-Gateway-Source-Info: Mailing List

Matt Madison writes:
>>When I try to send mail from a Sparc/OS station to the cluster alias
>>or to any cluster node I have random results: sometime the message
>>arrives immediately, sometime it is deferred saying 'connection
>>refused by ...' and sometime it is bounced shortly with 'Host unknown'
>>(but /etc/hosts has the right entries both for the cluster alias and
>>the nodes!)
>>
>
>First, I wouldn't recommend trying to send mail to the cluster alias address.
>In fact, the cluster alias address may be screwing other things up as well.
>I never got it to work for me when I was running V1.3 (back at my last job).
>That might explain the connection refused errors.

As I specified, the 'connection' was 'refused' both while sending to
the cluster alias and to the cluster nodes!
But about that, MAYBE, I have found out something: my
MX_STARTUP_INFO.DAT file looked so

001NETLIB:*
002ROUTER:V8530
003LOCAL:V8530
004SMTP:V8530
004SMTP_SERVER:V8530
004UUCP:V8530

It seems to me that this is correct according to 1.2.1 in page 1-2 of
the 'Message Exchange Instllation Guide' that states that

        'the processing agents [...]can be run on any or all
        nodes of the cluster [...] and will automatically cooperate
        in providing their respective services'

But I only had all work as I changed the file to

001NETLIB:*
002ROUTER:*
003LOCAL:*
004SMTP:*
004SMTP_SERVER:*
004UUCP:V8530

Now I have still the 'unknown host' problem, but at least not the
'connection refused' one.

Is the statement in the Guide incorrect? have I misunderstood it?
is the trick somewhere else?

>The bounces with "host unknown" don't sound like problems with the VAXes
>at all, but perhaps a configuration problem on your Sun.  Including a
>copy of one of these bounce messages might help in trying to track down
>the problem.

This is the message I get

>From meregall Tue Oct 13 16:45:41 1992
>Return-Path: <Mailer-Daemon>
>Received: by sic5020.cesi.it. (4.1/SMI-4.1)
>       id AB00286; Tue, 13 Oct 92 16:45:39 GMT
>Date: Tue, 13 Oct 92 16:45:39 GMT
>From: Mailer-Daemon (Mail Delivery Subsystem)
>Subject: Returned mail: Host unknown
>Message-Id: <9210131645.AB00286@sic5020.cesi.it.>
>To: meregall
>Status: R
>
>   ----- Transcript of session follows -----
>421 Host mailhost not found for mailer ether.
>550 meregalli@decvax.cesi.it... Host unknown
>
>   ----- Unsent message follows -----
>Return-Path: <meregall>
>Received: by sic5020.cesi.it. (4.1/SMI-4.1)
>       id AA00284; Tue, 13 Oct 92 16:45:39 GMT
>Date: Tue, 13 Oct 92 16:45:39 GMT
>From: meregall (Alberto Meregalli)
>Message-Id: <9210131645.AA00284@sic5020.cesi.it.>
>To: meregalli@decvax.cesi.it
>Subject: meregalli@decvax.cesi.it
>
>testo

This is part of the /etc/hosts file on the UNIX station

>128.1.0.3       decvax.cesi.it decvax DECVAX    # VAXcluster alias
>128.1.0.20      sic5020.cesi.it sic5020 SIC5020 # SPARC/OS station
>128.1.0.4       vax6000.cesi.it vax6000 VAX6000 # 1st node of cluster
>128.1.0.5       vax8530.cesi.it vax8530 VAX8530 # 2nd ...

(Please note that I _had_ to give different UCX names to my VAX's than
are their SCSNODE names: I saw that names like ANNNN (i.e. one letter
followed by many digits) annoy UCX! I hope that's not important!)

(I would also thank Brian Tillman and Ron Welker for comforting my
distress with UCX ;-).
------------------------------------------------------------------
Alberto Meregalli, SIC                         tel. +39 2 2125 249
Centro Elettrotecnico Sperimentale Italiano    fax  +39 2 2125 520
Via Rubattino, 54 - I 21034 Milano

Internet: meregalli@cesi.it         UUCP: ...i2unix!cesi!meregalli