XF 1.4 My Email adress send to member get error

[giaxaydung]

My Email adress send to member get error like in this images. I use gmail to send.
What can I do to fix this?

Help me, please! Thank you very much.

The image when I open mail box:


When I open my email:

 

[Mike]

Can you choose the "show original" option in the drop down menu and paste the result here (or in a PM to me if you'd rather it not be public)?