Yes, you have enabled anti intrusion features of chkuser, like maximum number of recipients or maximum number of wrong recipients.
When you reach one of these limits (it look you are hitting the max allowed of recipients), you have such a message.
You should enable these features only for messages coming from outside. Tonino At 15.49 12/07/2005, you wrote:
Hi We have in our email server (standard qmail toaster last version). We sent a communication to all our users ref Spam policy and got a few "Delivery Status Notification Failure" with the following : Diagnosti-Code smtp;571 sorry, you are violating our security policies (#5.7.1 - chkuser) The user for witch such message returned are active and random. Does anybody have any idea of what is going on? Helio Thanks
