Re: RES: Email oddity -- MIDRANGE-L

To clarify a little: the name used by the host technically does not _have_ to match the DNS name (although that is a particularly good idea) in order for this to work. You system may be called "mary" while the DNS entry is "john," and nobody will (usually) care. What DOES matter in this case, is that the IP address given in the connection must be traceable back to the originating server, irrespective of name. Further restrictions technically could be placed on this such that the names MUST match, but that's unnecessary and unusual. It's unusual primarily because it's necessary for a mail server to masquerade in some instances - mailsvr.yourdomain.com claiming to be smply yourdomain.com, for example. If mailsvr.yourdomain.com makes a connection to the Cox (and other) mail server, claiming to be who it is (mailsvr...), then Cox will take its IP address and perform rDNS on it.

If they are like many others who use this technique, they simply want to know that (both) :

the IP address can be resolved to a host
that host is not generic name like those assigned by ISPs for dialup and the like.

If these tests pass, that part of "spam detection" says, 'OK by me. On to the next phase.'

(see http://en.wikipedia.org/wiki/Reverse_DNS_Lookup) .. Goo to the section called Uses.)

"Dennis" <iseries@xxxxxxxxxxxx> wrote:

Ask the folks who made it possible to have this in DNS, to check the
PTR record for that entry. This is, I believe, the final key to making
it work.

"jmmckee" <jmmckee@xxxxxxxxxxxxxx> wrote:

I >thought< I had it fixed.

I used INav and looked at TCP/IP Configuration -> Properties.

Original value for host was the serial number (Sxxxxxxx). And domain
looked OK for internal. However, I could not ping the machine. The
computer does have an entry in the DNS s3rver, so I changed the host
and domain name to what I was told by the network folks. That name

can

be pinged.

Just tried SNDEMAIL to Cox, again. I was told it did not make it.

I am referring to a line in the header which used to say:
Received: from S1015362.xxxxx.org ([x.x.x.x])

I'll need to try it again to my email account to see if that changed.

-----Original message-----
From: "Rubens Lehmann" rubens@xxxxxxxxxxxxx
Date: Fri, 13 May 2011 10:40:50 -0500
To: "'Midrange Systems Technical Discussion'" midrange-l@xxxxxxxxxxxx
Subject: RES: Email oddity

John,

Can't understand what you mean without looking at it... Can you post

both

headers here, perhaps changing important data with something

generic?

Something like:

From my Outlook, to my mail server, to Gmail:

Received: from mydomain.com ([My Mail Server IP Address])
by mx.google.com with ESMTP id "lots_of_numbers";
Fri, 13 May 2011 08:18:23 -0700 (PDT)
Received: from [My WS IP on Internal Network] (HELO rubensmydep)
by mydomain.com (My_Mail_SW_Name)
with ESMTP id "lots_of_numbers" for XXXX@xxxxxxxxx; Fri, 13 May

2011

12:19:45 -0300

From my i, to my mail server, to Gmail:

Received: from mydomain.com ([My Mail Server IP Address])
by mx.google.com with ESMTP id "lots_of_numbers";
Fri, 13 May 2011 08:30:58 -0700 (PDT)
Received: from [My i IP Address] (HELO MY_I)
by mydomain.com (My_Mail_SW_Name)
with ESMTP id "lots_of_numbers" for rubensXXXX@xxxxxxxxx; Fri, 13

May 2011

12:32:20 -0300

Thanks,

Rubens

-----Mensagem original-----
De: midrange-l-bounces@xxxxxxxxxxxx

[mailto:midrange-l-bounces@xxxxxxxxxxxx]

Em nome de jmmckee
Enviada em: sexta-feira, 13 de maio de 2011 11:23
Para: Midrange Systems Technical Discussion
Assunto: Re: Email oddity

I >think< I have the answer. I sent an email from Outlook and from

the i to

my personal email account and looked at the headers.

The issue is that "Received:" is bogus. That, to me, means the SMPT
attributes. It would be nice if I could see the original value. I

searched

MIDRANGE and saw something from 2002, but I thought this had been

discussed

more recently, and that a method to see original values - in some

PF,

for

example, existed.

Is there some way to see original values?

John McKee
-----Original message-----
From: jmmckee jmmckee@xxxxxxxxxxxxxx
Date: Thu, 12 May 2011 11:14:53 -0500
To: "Midrange Systems Technical Discussion" midrange-l@xxxxxxxxxxxx
Subject: Re: Email oddity

Haven't had THAT thrill yet, but have had others. Coworker

called

somebody years ago on another job. Was put on hold by the system.

He

waited patiently. A little after 5PM, the system announced that the
business was closed for the day, call again tomorrow, and hung up.

John McKee
-----Original message-----
From: "sjl" sjl_abc@xxxxxxxxxxx
Date: Thu, 12 May 2011 10:45:50 -0500
To: midrange-l@xxxxxxxxxxxx
Subject: Re: Email oddity

John -
Not unlike having a support call with Dell technical support in

Bangalore...

- sjl

John wrote:
Thanks for the article.
Maybe, it >will< be resolved today.
Just (apparently)

<< have to supply the answers, as well as the questions when

asking

some

support people for help. >>

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