Hyphens, line braks and more in Plain Text Messages (Outlook 2007)

Hi guys,
I encountered an interesting problem in Outlook 2007.

When sending myself a plain text mail with this body:

Denis Briel
My Company - A Member of the Mother Group
New York

The mail arrives like this:
Denis Briel
My Company - A Member of the Mother Group New York

The line break is removed by Outlook with the message:
"unnecessary line breaks have been removed"

When e.g. replacing the hyphen with a comma, the same problem occurs.
When replacing it with a period, the text arrives as sent.

Is there any way to force Outlook to display the line break??

Thanks in advance!

Denis aka TheStitch