Some spammers apparently have a sense of humor. Some of our spam traps were recently hit with a run of test messages with the subject line:
in sov r bot test you
The spamtrap addresses affected were originally 'scraped' by spiders running on servers rented from Everyone's Internet/EV1Servers, and gather the usual mess of penis enlargement, pills and fake watch spam.
Using a distinctive test message rather than simply sending out another batch of pill spams would make sense if spammers were collecting bounces in order to eliminate undeliverables from their spam lists. This doesn't seem to be the case, however: the 'From' addresses on the messages use randomly-generated addresses at other people's domains, so there's no way for the spammer to collect the bounces. They could monitor the actual SMTP transaction — but then there's no advantage to using a distinct test message. It's therefore likely that the messages are no more than they appear to be: simply test data used for checking a botnet or trying out a new email module.