One of my customer has a new GW8 installation

When he reply on incoming mail, sometimes, the recipient receive all the source mail in the body

If I reply in plain text mode, it's ok
Since upgrading with the GW8HP1 version, this symptom decrease, but is still here.

It depend of the recipient SMTP server and the GW8 client version

- Sending from GW8 client + GW system directly to other GW system --> no problem
- Sending from GW8 client + GW System to other GW8 through antispam software based on Microsoft SMTP Server (GFI Mail essential) --> the problem occur
- Sending from GW7 client + GW System to other GW8 through antispam software based on Microsoft SMTP Server (GFI Mail essential) --> no problem

I try with english/US and french version of the client, no change

If anyone has an idea