Re: Setup problem with SenderID and OWA
- From: "Rich Matheisen [MVP]" <richnews@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 16 Dec 2005 13:22:05 -0500
BK Rogers <BKRogers@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>Both the Sending and Receiving Mail servers are Exchange 2003 with SP2.
>The browser is IE 6 SP1. The 70.247.95.109 address is one of my static IPs
>at my home where I was running using the IE explorer from.
I'd be interested to know if anyone else sees this. I know I don't.
>Only one Received from header was in the SMTP DATA Portion. To actually see
>the Received from header, I had to put a packet sniffer on the receiving
>Exchange server and watch the exact data being sent.
Or just use Outlook and the "View | Options" menue . . . or Outlook
Express, or other e-mail clients.
>The Exchange server was
>rejecting the mail with a 550 5.7.1 Sender ID (PRA) Not Permitted as soon as
>the DATA conversation portion was ended with the standard .<CR><LF> . Since
>it was rejected by the SMTP server,I would never see the note in my Inbox.
I wouldn't reject mail if the ony problem was that SPF/SenderID
failed. There are way too many broken SPF TXT records out there to
trust them all that much. Sure, if SPF/SenderID fails, let the IMF (or
whatever you're using for anti-spam control) take that into account
and weight the meesage accordingly, but I trust SPF/SendeID about as
much as I trust DNS RBL's run by people I've never met whose agendas I
don't know. :)
>If you are looking at the headers in Outlook for a note sent via OWA , you
>will need to look at the lowest Received: from the note because it has been
>relay from one SMTP server to another and the path as been updated.
That's true for any message handled by a SMTP server . . . unless they
rip out the Received headers on the way out of the organization.
>(Example from an Inbox after successful transmission...)
>Received: from houston.chickenfriedbacon.com ([70.247.95.98]) by
>solar.solarwinds.net with Microsoft SMTPSVC(6.0.3790.1830);
> Fri, 16 Dec 2005 09:44:54 -0600
>Received: from 206.231.4.58 ([206.231.4.58]) by
>houston.tul.chickenfriedbacon.com ([1.0.0.8]) with Microsoft Exchange Server
>HTTP-DAV ;
^^^^^^^^
^
|
This is the part that disturbs me.
Lemme ask around and see if anyone else is seeing this.
>After making my post last night, I did more reading about the PRA and added
>what I think is the correct workaround to our DNS TXT record. (But if you or
>other have more input it would be welcomed) Since the MAIL From part is
>correct, but the top level PRA may come from anywhere on the Internet logged
>in via OWA, I added a
>
>spf2.0/pra ?all
That should be okay, but it's probably as effective as accepting the
failed PRA and letting the IMF use it as one of its inputs.
--
Rich Matheisen
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm
Don't send mail to this address mailto:h.pott@xxxxxxxxxxxxx
Or to these, either: mailto:h.pott@xxxxxxxxxxxxxxx mailto:melvin.mcphucknuckle@xxxxxxxxxxxxx mailto:melvin.mcphucknuckle@xxxxxxxxxxxxxxx
.
- References:
- Re: Setup problem with SenderID and OWA
- From: Rich Matheisen [MVP]
- Re: Setup problem with SenderID and OWA
- From: BK Rogers
- Re: Setup problem with SenderID and OWA
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