Also rather funny, this simple thread is getting picked up as naughty by some mail servers.
From: Nemx Power Tools for MS Exchange Server_MEXCHSYDN001_1 <NMXEXSPP1_MEXCHSYDN001@xxxxxxxxxxxxxxxx> To: 'netmask' <netmask@xxxxxxxxxxxx> Subject: Message Notification: Re: Inappropriate content in Fedora Core 2
Inappropriate content was detected in an email you sent to a user at domain macquarie.net.au, the message has not been delivered.