Forwarding Emails

[mike]

I have a problem which is doing my head in!
Sometimes I receive emails which after reading I want to forward to another email address however the forwarded email never gets through. Each time I get a reply saying
"This message has been rejected because it has
a potentially executable attachment..........
This form of attachment has been used by
recent viruses or other malware.
If you meant to send this file then please
package it up as a zip file and resend it."
I don't want to zip files as the other person doesn't have zip. Is it not possible just to forward emails without all the fuss of zipping them?