Mozilla Thunderbird Forwarding?

If I forward emails from OUTLOOK to my Blackberry (different email providers) the email goes through with absolutely no problem). But, if I forward emails from THUNDERBIRD to my Blackberry, it works, but it shows a whackload of gobbetygook prior to the message. It shows the internal dealings of the email, which ISP it was forwarded through, and a whole bunch of other stuff you wouldn't normally see. Any ideas?