I've maintained the dougscripts.com domain for a number of years now, and I've had my Dot Mac email address since iTools. So it came as a shock when I figured out that Apple has recently started silent filtering any Apple mail messages from any Apple mail account that contain the phrase "dougscripts.com" or even just "dougscripts".
So if I send you an email from my mac/me/icloud address with "dougscripts" in my signature, you won't get it. If you have a mac/me/icloud mail account, you won't receive any mail with the word "dougscripts" in the message body.
So links to scripts, tips, and articles on my site can't be used in iCloud mail messages or they will not be delivered.
I don't know exactly why this has happened but undoubtedly it is because my domain name was used by some unscrupulous spammer. It's not like I send spam.
This is truly disappointing, considering what it is I do here for Apple users. Not being able to use my Apple mail to conduct basic correspondence with Visitors and Correspondents (and Apple's customers) is a heartbreaking irony.
So, if you haven't received a reply from me, try again, and I'll get back to you with my "secondary" email address (which may be getting a promotion). Meanwhile, I'll try lobbying Apple to be removed from the filter.
Update: it occurs to me that an over-zealous algorithm may interpret "dougscripts.com" as a nefarious pharmaceuticals spammer.
Update 2, June 18, 2014: After contacting AppleCare, this issue was eventually resolved during this past weekend. Although Apple was able to confirm that my account was being filtered, they did not say why nor did they actually inform me that the issue was resolved; I only found out after sending myself a test mail every few hours.
Update 3, June 21, 2014: AppleCare called me to "officially" confirm, sorta, that the issue was resolved, uh, was it? Yes, I replied. And when I asked if there was a particular reason why it happened in the first place, all they could say was that it was an issue on the server side.