Email inserted text following a security update

[SlimeBallSally]

Seemingly following a security update the following inserts automatically into random emails sent from Outlook exchange. Any ideas? It spooks the recipients and looks terrible.

ꃰᛶtml xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">

[sivasubramanian]

@SlimeBallSally 

Please let us know which McAfee version that you have installed on your computer.

Regards
Siva

[SlimeBallSally]

Hi Siva, I have attempted to send you a screen shot but it looks like

Total Protection 16:0 R18

Security Centre Build 17.8.131

Firewall Build 18.8.130

Virus scan 22.3.143

Anti spam 18.8.138

[sivasubramanian]

@SlimeBallSally 

Please let us know whether it started happening after McAfee update or Windows update. Also the windows version on your PC. Try reinstalling McAfee and update us.

Regards
Siva

[SlimeBallSally]

Windows 7 Home Premium and will do