Hi there!
This issue is happening only in outlook 2007 2010 2013. Basically its showing little squares (our spacer images?) when we are testing the email in Litmus. Which is odd because we have used this code before without this issue! We have tried using <br> breaks but the spacing is huge when we do that... :(

Here's a link to an area of the email where I've circled the little box spacer that is appearing:

http://bit.ly/1wks98t

Here is the code:
<img style="font:9px Arial Narrow, Arial, Helvetica, sans-serif;color:#ffffff; font-style:normal; font-weight:normal; background-color:#ffffff; text-align:center;width:10px;margin:0;padding:0;" src="http://design.ca/files/D2/Email_Images/2015/client/emailname/client-white.gif" border="0" vspace="0" hspace="0" width="10" height="10" alt="client name" />

Any ideas?