Hi

I received this Message Delivery Failure email: http://pastebin.com/JLAYbSSJ

It looks like it claims the original email came from me:
From: name =?UTF-8?B?QmrDuHJuc2Vu?= <myemail@gmail.com>
When I googled the subject ("I just refuset to eat this.. @mail.com") it came up as a classic spam subject.

When I checked Googles log for account access, it says that there were no logins at the time when the email was sent.

The only service that is authorized to send email on my behalf, is Gnome:

GNOME — Gmail, Google Calendar, Google Contacts, Google Docs, Google Docs, Google Docs [ Revoke Access ]

Is this a "Message Delivery Failure" spam email if such a thing exist? Or does my Ubuntubox have a trojan?