Mozilla Thunderbird, not get message body

[Thomas Kaiser (ubuntu)]

Hello All

I use Mozilla Thunderbird as my email client (in Breezy). All mails are 
on an imap server. Recently I got this message in the body "This body 
part will be downloaded on demand."

What do I have to do to get them downloaded? (I clicked all menues 
already, but I did not find something like "download body" :-()

Any help, Thomas

-- 
http://www.kaiser-linux.li