Ghost alerts

Hello,

We recurrently receive messages from users like this one:

v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}

Normal
0

21

false
false
false

FR
X-NONE
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:”Tableau Normal”;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:””;
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:”Calibri”,”sans-serif”;
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:”Times New Roman”;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;}

From: John Subject: Notifications Message Body: To whom it may concern, I just signed up and finished most of my profile. However a few times now a small window has popped up down in my right corner saying I have a message from various people, however my inbox is empty upon checking. I write to you for a solution, so that I don’t inadvertently ignore some poor fellow. Kind regards, John — This e-mail was sent from a contact form on WhiteDate (https://www.whitedate.net)

The alert pop up seems to not work properly.

Do you have a solution ?

Thx, Christiane