Email being falsely rejected as spam when using Image in Outlook signature

Hi Experts,

I have a problem that is causing some issues. Recently some emails have not been delivered to clients because the email has been classified as spam. The signature on the email contains a 36k jpeg, when this is removed it seems to be sent correctly. The image signature seems to work for most people, it is only a few that have issues. The email client is Outlook 2007. I believe exchange is 2007.

I have attached the diagnostic information below, please can you offer any advice so that I can prevent this from happening in the future.

What does the 1.00 spam hits mean?

Many thanks,



Delivery has failed to these recipients or distribution lists:

An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.

The following organization rejected your message:

Sent by Microsoft Exchange Server 2007

Diagnostic information for administrators:

Generating server:

RecipientEmailAddress #554 Your email is considered spam (1.00 spam-hits) ##

Original message headers:

Received: from ([exchange IP]) by ([exchange IP]) with mapi; Thu, 24 Jan 2008
 02:25:15 +0000
From: GC
To: Recipient
Date: Thu, 24 Jan 2008 02:25:04 +0000
Subject: are you busy for lunch today?
Thread-Topic: are you busy for lunch today?
Thread-Index: AcheMFRVO0DC9W35Qgedu+8BTOi2Wg==
Message-ID: <>
Accept-Language: en-US, en-GB
Content-Language: en-US
X-MS-Has-Attach: yes
acceptlanguage: en-US, en-GB
x-tm-as-product-ver: SMEX-
x-tm-as-result: No--36.704200-5.000000-31
x-tm-as-user-approved-sender: No
x-tm-as-user-blocked-sender: No
Content-Type: multipart/related;
MIME-Version: 1.0
Who is Participating?
peakpeakConnect With a Mentor Commented:
The recipients need to add the sender email address to the whitelist (if Outlook then it's normally sufficient to add the sender to Contacts)
si_marshall1972Author Commented:
If I am emailing someone for the first time, then I need to be sure the email is going to be delivered. It is not practical to ask every recipient to add an email address to a whitelist.

If the image is removed from the signature, there is no problem with the email. If the image is in the signature then the email is rejected. I would like to know why an image in the signature will cause the email to be rejected for a few recipients.


war1Connect With a Mentor Commented:
Hello si_marshall1972,

Instead of sending the image, put the image in a server on the internet.  Then put the link to the image in your signature.  Then the email and signature should go through and not be flagged as spam.

Hope this helps!
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