Month: October 2013

Outlook 2010: 503 valid RCPT command must precede DATA error

The Reader’s Question: Dear InetDaemon, Why do I get a “503 Valid RCPT command must precede DATA” message when I send to some people? Thanks! The Error Message This mail message is sent to you automatically by the mail server.

Global Attack on WordPress Sites

As I write this post, there is an on going and highly distributed, global attack on wordpress installations to crack open admin accounts and inject various malicious scripts. To give you a little history, we recently heard from a major