[nos-bbs] FW: email gateway issue

[Michael Fox - N6MEF]

Bump

 

BTW, this situation below happens regardless of whether the local-only
address is in the To:  or the Cc: field.  

 

Example 1 (send to my local JNOS mailbox with cc to my email address):

sc n6mef

cc: n6mef at mefox.org

Subject .

 

Example 2 (send to my email address with cc to my local JNOS mailbox):

sc n6mef at mefox.org

Cc: n6mef

Subject .

 

A capture with wireshark on the tunnel between JNOS and the Linux smtp
gateway shows the incomplete address in the DATA portion.  The capture below
is from example 1.  As you can see, the "To:" header is incomplete.   

 

Received: from n6mef.ampr.org by n6mef.ampr.org (JNOS2.0j.2.SCC.1) with
SMTP\r\n\tid AA1179 ; Sun, 24 Mar 2013 14:52:20 PDT

Date: Sun, 24 Mar 2013 14:52:01 PDT

Message-ID: <1177 at n6mef.ampr.org>

From: n6mef at n6mef.ampr.org

To: n6mef   

Cc: michael at mefox.org

Subject: test to local, cc fqdn

X-BBS-Msg-Type: P 

X-JNOS-User-Port: Telnet   (n6mef @ 127.0.0.1)  ->    Sending message\r\n 

 

JNOS shouldn't be sending this non-FQDN address to another machine.

 

In PostFix, there is an option called "append_at_myorigin" which appends
"@<my-fully-qualified-hostname>" to any local-only address.

Is there an equivalent option in JNOS?

Otherwise, is it possible to just fix JNOS to properly complete the address
before sending it on?

 

Thanks,

Michael

N6MEF

 

 

From: Michael Fox - N6MEF [mailto:n6mef at mefox.org] 
Sent: Thursday, March 21, 2013 5:08 PM
To: TAPR xNOS Mailing List (nos-bbs at tapr.org)
Subject: email gateway issue

 

I discovered a problem with JNOS not properly completing the address of
messages sent to the gateway.  Here's the situation.

 

Let's say I use SC to send a message to joe at ham.org, with a copy to n6mef.
That is, the message goes to an email address with a copy to a local packet
user.  Note that the local packet user address does not include any "@...".

 

The message is sent to the email gateway for handling the email.  The
addresses that the email gateway gets from JNOS are: 

 To: joe at ham.org, Cc: n6mef.

 

The problem is that n6mef has no domain attached.  The receiving mail
gateway, depending on how it strictly it is configured may even reject the
message because the recipients are not fully qualified.  Or the message may
be dropped by the destination mail server at ham.org.  Or the destination
mail server may add it's own domain, resulting in n6mef at ham.org.  This is
what happens at yahoo and other places.  Now, if someone tries to reply all,
they end up with bounces because n6mef at ham.org doesn't exist.

 

>From my understanding of the SMTP standards, only fully qualified addresses
should be passed between mail systems.  In other words, the JNOS system
should add its local hostname.domain to the local part (n6mef) before
sending it along, so that the message is sent as:  To: Joe at ham.com, CC:
n6mef at bbscall.ampr.org  (or whatever).

 

Is there maybe a configuration option I'm missing that would tell JNOS to
add it's hostname to non-fqdn addresses?

 

Thanks,

Michael

N6MEF

 

 

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