Re: Setup problem with SenderID and OWA
- From: "Rich Matheisen [MVP]" <richnews@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 16 Dec 2005 10:25:16 -0500
BK Rogers <BKRogers@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>So I've come accross a problem with my setup of my SPF record and users send
>mail with OWA. When a user logs into our Exchange server via OWA and sends a
>new message, the SMTP message header includes the IP address the OWA client
>was sending from....
I just checked a message sent from OWA, and I find only the IP address
of the Exchange server, not the IP address of the machine running the
browser.
I sent one from another organization, and one from within our own
organization, and in neither case does the client appear in the
"Received:" headers.
Both were sent from Exchange 2003 servers, one organization running
SP1 and the other running SP2.
>Sample SMTP Header from Exchange server....
>Received: from 70.247.95.109 ([70.247.95.109]) by solar.tul.solarwinds.net
>([206.231.6.251]) with Microsoft Exchange Server HTTP-DAV ; <CR> <LF> ..
Could this be the browser you're using that's causing this?
IAC, how many "Received:" headers are in the message? The one above
surely isn't the one inserted by the receiving server. How many
"Received:" headers is the SMTP server checking?
>This mail is rejected by the receiving mail server with the error message
>Response: 550 5.7.1 Sender ID (PRA) Not Permitted
>
>The txt record for solarwinds.net is
>v=spf1 mx a:mail.solarwinds.net -all
>and our mx record resolves to 206.231.6.251, so that part is OK.
>
>So what is causing the PRA not permitted?
That's hard to say since you don't say what the sender's e-mail
address is (e.g. the "From" header). The PRA isn't about simple IP
address checking (like SPF), but about whether the e-mail address of
the sender (taken from the RFC2822 headers -- or the MAIL FROM if the
sender can't be found in the message).
>Is it the 70.247.95.109 address
>that was the external IP address where the OWA client was logged in from?
It may be, but that would depend on the checking done by the receiving
server (e.g. how many "Received:" headers they check).
>Can I fix this without setting my SPF records to +all?
Not all implementations of SenderID are error-free. So, trying to fix
this at your end may not be the best approach. I _am_ curious about
the 70.247.95.109 address in the "Received:" header, though.
--
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
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.
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