It looks like OWA wants semicolons for multiple TO: addresses:
http://blogs.technet.com/kclemson/ar.../13/53822.aspx

"JPawlak" wrote in message
...
Is it possible to specify more than just the To address in a new OWA
message?
I know that when I do

that will open up a new OWA message with as the To
address,
but is it also possible to specify the subject/body of a message too? I
have
tried adding &subject=Test but that does not work.

Thank you in advance.
JPawlak