If you or a customer are doing something like setting up different tagging on subject lines of spam emails, redirecting spam to a different folder, or other aspects of the anti-spam or anti-virus filtering built into OpenSRS Email Service, you can use a couple of standardized message strings or attachments.
A message that is sent or received by OpenSRS Email Service containing the GTUBE string will be flagged as spam 100% of the time. In fact, it will automatically be given a spam score of 100. More information on the GTUBE string can be found here: http://en.wikipedia.org/wiki/GTUBE
Similarily, sending or receiving a message with the EICAR test file will trigger the anti-virus filtering on our email service. More on the EICAR test file can be found here: http://en.wikipedia.org/wiki/EICAR_test_file