Ok, I've replicated this problem on 2 computers using IE and Firefox 1.5. Cleared cache/cookies, etc.
Any time we try to forward this particular message, we get an error stating: Not Acceptable An appropriate representation of the requested resource / could not be found on this server.
Apache/1.3.34 Server at webmail.jtpre.com Port 80 The URL at the time is: http://webmail.*****.com/?_auth=50977a9cdb4cf37ae6fa18e5ac3bb13eebdb37b5&...
The source of the email in question is: I have edited the specific email addresses and IP/server addresses to hide them. Everything else is exactly as is.