Email a document from AX (Invoice, Packing Slip)

Hi all,

I am having an issue on AX 2009. When I try to email an invoice or another document from AX to a new recipient, I have an error message as you can see on the image below. Do you have any idea concerning this issue? what could be the problem?

https://onedrive.live.com/redir?resid=B00AB8DDD0145240!171&authkey=!ABbprckykuvtuAI&v=3&ithint=photo%2cjpg

Regards