Domainname disapears when forwarding an external mail

Hello,I’m dealing with the problem that the sender’s ‘domainname’ disappears when forwarding his mail.

Sender’s mail comes in from the internet…

SO, mail from e.g. “john.doe@world.com” changes to “john.doe” in the forwarded mail. There’s no possibility to find back the original full e-mail address… just try it.

Is this a hidden (security) feature of Lotus Notes or a bug? Anyone experienced same behaviour? Is there a solution?

Thanks, Leo.