Then I get a message back from him:
Hello, you've reached Joe's automated junk-mail filter! Please read this message carefully, it is NOT AN ERROR or a BOUNCE!
The email you sent is being withheld from Joe until you confirm that you're a real person and not an email spammer. All you have to do is send an empty message to the following address (you can probably use your mailer's "Reply" feature):
[blah blah blah]
This one-time confirmation will verify that you are real, and that your messages are legitimate and not junk-mail. Thanks for bearing with this ungainly process ... but let's face it, spam stinks!
I would like you all to do me a favor. Please take a moment to send a message to firstname.lastname@example.org and tell him to choke on a bucket of dicks.
And make sure you confirm the message so that he's sure to see it!