some message get garbled after adding disclaimer to a message

xhope 221 Reputation points
2023-02-01T09:44:02.2366667+00:00

Dear experts,

After I added an external message disclaimer via transport rule, some of our external message get garbled. I have confirmed that it's called by the disclaimer because when I disable the rule, everything is OK.

below are the disclaimer and the garbled mail:

<p>
<table border=1 cellspacing=0 cellpadding=0 align="left" width="100%" >
  <tr>
    <td width="100%" cellpadding="7px 6px 7px 15px" style="background:#FAFAD2;padding:5pt 4pt 5pt 12pt;word-wrap:break-word">
      <div style="color:#222222;">
        <span style="color:#FF0000; font-weight:bold;font-family:Calibri">WARNING: </span>
        <span style="color:#000000; font-family:Calibri">This is an external email. Do not click links or open attachments unless you recognize the sender and know the content is safe.

      </div>
    </td>
  </tr>
</table>
<br /> 
<p /><br > 
<p>
<table border=1 cellspacing=0 cellpadding=0 align="left" width="100%" >
  <tr>
    <td width="100%" cellpadding="7px 6px 7px 15px" style="background:#FAFAD2;padding:5pt 4pt 5pt 12pt;word-wrap:break-word">
      <div style="color:#222222;">
        <span style="color:#FF0000; font-weight:bold;font-family:Calibri">WARNING: </span>
        <span style="color:#000000; font-family:Calibri">This is an external email. Do not click links or open attachments unless you recognize the sender and know the content is safe.
<br>
   <span style="color:#FF0000; font-weight:bold;font-family:微软雅黑">安全警告: </span>
        <span style="color:#000000; font-family:微软雅黑">这是一封外部邮件。请不要点击邮件中的链接或附件,除非你知道该发件人并确认内容是安全的。
      </div>
    </td>
  </tr>
</table>
<br /> 
<p /><br > 

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Accepted answer
  1. Andy David - MVP 138.6K Reputation points MVP
    2023-02-01T12:17:06.68+00:00

    See these threads on a possible solution:

    Add the Key <add key="DisableDetectEncodingFromMetaTag" value="true" /> in the EdgeTransport.exe.config and then restart the MSExchange Transport Service. 

    https://learn.microsoft.com/en-us/answers/questions/394418/exchange-messages-encoding-error

    and

    https://social.technet.microsoft.com/Forums/windows/en-US/ded41f3a-8934-403f-933d-eb63aaa71a33/exchange-2016-cu5-email-append-disclaimer-garbled?forum=Exch2016MFSM

    1 person found this answer helpful.

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