This morning I received the bounce message seen above from a Gmail server (173.194.78.26) saying that my IP has been sending too much unsolicited mail. The amusing part? The IP address being complained about, 74.125.82.53, is one of Google’s devices, and the original message was sent via Google Apps. Thus, Google has rejected a message from its own mail server and bounced the error to an end user.
In the last 30 minutes I’ve received four of these. I wonder when it’ll stop.