Not always, but at times Rock e-mails will look like this, but with dozens more lines, to the viewer:

PCFET0NUWVBFIGh0bWwgUFVCTElDICItLy9XM0MvL0RURCBYSFRNTCAxLjAgU3RyaWN0 Ly9FTiIgImh0dHA6Ly93d3cudzMub3JnL1RSL3hodG1sMS9EVEQveGh0bWwxLXN0cmlj dC5kdGQiPjxodG1sIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hodG1sIj48 aGVhZD4KICAgIDxtZXRhIGh0dHAtZXF1aXY9IkNvbnRlbnQtVHlwZSIgY29udGVudD0i dGV4dC9odG1sOyBjaGFyc2V0PXV0Zi04Ij4KICAgIDxtZXRhIG5hbWU9InZpZXdwb3J0 

Is there some setting that we have wrong in our e-mail setup that could cause this?

Thanks in advance for the help!