Anybody seen this before? We have a client on our mail server who occasionally and randomly receives emails which contain nothing other than the output from `spamc --help` (see output at <http://pastie.textmate.org/private/6gb0ymmqpyw7mee39sespg>). Nothing* in our log files match up with the arrival of these messages, and the client claims they don't coincide with any action on their part. They're able to receive and send message normally. These messages only occur about once every couple days.
*There is one thing, but it doesn't occur at the same time as the headers of the message received: 2011-05-20 08:25:55.827900500 [13887] warn: auto-whitelist: open of auto-whitelist file failed: child processing timeout at /usr/bin/spamd line 1262. Quinn
