Exchange Transport Rule Remove SharePoint Links
Hey everyone, So we recently implemented an Exchange online (M365) transport rule to add a small amount of HTML text at the top of the email, warning the email has come from an outside source, however this appears to have caused an issue with sharePoint links sent from external parties. The image etc are all there, and all the links to Microsoft.com etc are all fine, however the image for the excel/ word doc etc, are now just blank images, without the URL behind. If you remove the transport rule its all fine. The HTML on the transport rule is this <!-- Red Banner --> <table align="left" border="0" cellpadding="0" cellspacing="0" style="width:100%"> <tbody> <tr> <td style="background-color:#ec6137; width:4px"> </td> <td style="width:1187px"> <p><strong> Caution:</strong> This email originated outside of the *******. Be careful of attachments and links. Report suspicious emails to ServiceDesk.</p> </td> </tr> </tbody> </table> <p> </p> There's nothing in there to strip the attachments, but the email is being modified by the HTML warning, so its plausible to see with Exchange would see it as a threat. We do have the safe senders part of Exchange turned on etc. Any thoughts? Ta