Railo calls the following File using URLEncodedFormat:
C:\Program%20Files%20(x86)\Railo\lib\jmimemagic.jar and windows cannot find that file.
i don't know why it's URLEncoded, but a simple decode would help.
I don't know if this is a real problem because it still sends mail.
Strangely on Thunderbird 3 the images defined as inline are displayed as attachments, everywhere else it seems to work (Outlook, Gmail)