Ok, I got the newsletter.
Lets make sure geeklog is not filtering your html as its very strange that the links set in the footer by the plugin do not get stripped.
Geeklog Admin -> Configuration -> Geeklog -> Miscellaneous -> HTML Filtering -> Skip HTML Filter for Root? -> Set to TRUE
-s
I copied the html from your newsletter the way it displays on yoursite into my test site newsletter, and it sent fine - no stripping.
Don't use the advanced editor, and try again.
-s
Hi. The newsletter plugin is working for me on a geeklog 1.7.1 site.
::Ben