Unfortunately, as originally reported by John Brownlee at Cult of Mac, it looks like Apple may be filtering out emails sent from the online MobileMe client based on content. The story is that a user was trying to send an email mentioning "Authoritarian Oppressive Regimes," and when sent, those messages would not go through to their intended recipients, with no error message back from Apple. Cult of Mac sent a few more test messages through the system, and found that simpler emails with less political messages made it through just fine.
There's a few things to note here: First, this is the web client only -- there's no indication that any emails sent via MobileMe's SMTP/IMAP interface are being blocked in this way. Seco
