Chapter 4 Troubleshooting 61
A subscriber who forwards or replies to a voice message in Outlook Express receives
This occurs because when a subscriber forwards or replies to a voice message, Outlook Express inserts a text comment. Desktop Messaging does not support this type of text comment.
For replying to a message, tell the subscriber to clear the Include Message In Reply option:
For forwarding messages, there is no option in Outlook Express to prevent inserting text when forwarding messages. The subscriber must manually remove the text content from the message. After the text has been removed the message can be sent with the forwarded voice attachments.
CallPilot Desktop Messaging Installation and Maintenance Guide