Jobs are being monitored, and logged as "Outbind:\\xxxxx-xxxxxxxxxx" instead on "Microsoft Outlook - Email header"
This is seen in the queue and when released.
Citrix client, Outlook 2007 (non-web based). Windows 7 or Wyse host both affected the same.
I can see lots of references to HP printers having problems printing these, but nothing which is the same for a Canon driver...