Mail Flow - External Message Warning HELP

Anonymous
2019-02-11T17:13:35+00:00

Hello!

I'm trying to setup a mail flow rule for external email messages from non-organization addresses. I have it setup great, however I have it coded so that it displays the yellow background, red boarder etc and it displays perfect in a sample code viewer. However, when I add it to my rule and then send a test message to my email from outside the org, it doesn't display any of these colors. HELP?? I have included my code below. I'm using 0365

<div style="background-color:#FFEB9C; width:100%; border-style: solid; border-color:#9C6500; border-width:1pt; padding:2pt; font-size:10pt; line-height:12pt; font-family:'Calibri'; color:Black; text-align: left;"><span style="color:#9C6500"; font-weight:bold;>CAUTION:</span> This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.</div><br>

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Anonymous
2019-02-11T19:26:52+00:00

Hi BH33,

Thanks for provide the details in your post. About your question, please kindly check following steps to see if it can help you fix this issue:

  1. In Exchange Admin Center, go to mail flow > rules and then click "+" to create a new rule.
  2. Then set the new rule like below picture:

Note: in step 4, please enter following code: 

<p><div style="background-color:#FFEB9C; width:100%; border-style: solid; border-color:#9C6500; border-width:1pt; padding:2pt; font-size:10pt; line-height:12pt; font-family:'Calibri'; color:Black; text-align: left;"><span style="color:#9C6500"; font-weight:bold;>CAUTION:</span> This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.</div><br></p>

I have tested above rule on my side and I can successfully show the warning message(see below picture), if you have any problems when doing so, please feel free to post back and provide us a screenshoot of the detailed information about the rule you created for analysis.

Regards,

Jennifer

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  2. Anonymous
    2020-10-20T16:47:23+00:00

    Josh, 

    Are your e-mails coming in as HTML or plain text?

    If plain text, you will only get the wording, not the color.

    If they are HTML, then we may need to see your coding.

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  3. Anonymous
    2020-07-31T17:02:24+00:00

    From what I read and understand, it is possible but a lot harder to spoof the header.

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  4. Anonymous
    2020-07-31T05:52:34+00:00

    Thank you for the answer.

    This year we had one spoofer who managed to match senders address. 

    If he would be asking for money without the warning banner. It would give the impression that everything is safe.

    So I am curious how extensive the created rule is checking this?

    Kind regards,

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