Email being rejected by Exchange 2007 Antispam content filtering when sent from a Blackberry

A few days ago I started using Exchange 2007 built in Anti Spam - Content Filtering and since have not been able to receive emails sent from Blackberry handhelds. When I disable the Content Filtering the Hub Transport Exchange passes the email from Blackberry handhelds through.

Action Taken: Then I stared to add in the domains in the custom words or phrases that will not be blocked; this works but is not perfect.

Question: I there any way to allow all email sent from a Blackberry handheld, for example when a user send from an AOL, Yahoo, MSN or Gmail account from the handheld to bypass the Content filter in EX2K. - see below errors.


One From AOL account through A Balckberry Handheld:

From: "Mail Delivery System" <>
Date: 14 Apr 2010 18:57:38
To: <>
Subject: Delivery Status Notification (Failure)

The following message to <> was undeliverable.
The reason for the problem:
5.1.0 - Unknown address error 550-'5.7.1 Message rejected as spam by Content Filtering3

From Yahoo

Hi. This is the qmail-send program at
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<>: failed after I sent the message.
Remote host said: 550 5.7.1 Message rejected as spam by Content Filtering.

--- Below this line is a copy of the message.

Return-Path: <>
Received: (qmail 28214 invoked from network); 14 Apr 2010 23:21:05 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  b=kSTsdnjEcip9Ml3/XsDnyYse5qHtajo7zdMj+Zz5NmUaUkdUGRgEsKTr1xJCsD4VxWLAJXCnUYatdHH2FpEwyYKjy7eC3ozPtPtfMiuoX4gyyOzMHe5ZjxnKuL3BXa7QGgVwNJWXeBtsSIDwxMds7mh/UTZUAp7eP8dHYKDprF8=  ;
Received: from (johnnymags@ with xymcookie)
        by with SMTP; 14 Apr 2010 16:21:05 -0700 PDT
X-Yahoo-SMTP: xEtXq2iswBDpNvY7Fqc0QOIuKNmEWdc-
X-YMail-OSG: usutI_oVM1mCLVdzAHRuxEbL9hwHaLMc3Yem9YfzzvRqhF1Ts_9.8P5h9lDfD64LNK6_JUIgYUvB40IqockBjN7ms14foaFHyEoktCXYeYkifYnuoTR5FR_bYZ38MONS5KTVT8l.g9Nj8uWlYjntuA1GnVujsM5Jrsz8Hu62G0qkbLe1Q_6iDVIkfMqAD9K7ccyYdGFKB1eGXOxJ1LMmhRMbQLt59Fh7YV4IFZniaNW6U.qrHf30Aw--
X-Yahoo-Newman-Property: ymail-3
X-Priority: Normal
Sensitivity: Normal
Importance: Normal
Subject: Hi
To: "John Mapleton" <>
Date: Wed, 14 Apr 2010 23:22:10 +0000
Content-Type: text/plain
MIME-Version: 1.0


Who is Participating?
This looks like being caused by SPF which is a means to reduce spam from non authorised mail servers

AOL, MSN and Gmail all have SPF records which basically state which mail servers are genuine as far as email from those domains is concerned. You can have a look at the records by running nslookup

Then type

set type=txt

then enter a domain eg which will show you:       text =


Now if you're sending from a blackberry but your from address is then you are not sending from the authorised server and so a spam filter may stop you.

In exchange you can disable this, in Hub Transport/Anti Spam disable Sender ID

Here is the MS doc for it:
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