Hi One of the users complained that he has not received a mail from a customer, when I checked on the message tracking center, it says the following Message Submitted to Advance queuing Started submitting to advance queuing Message submitted to categorizer. The message size is only 8kb and there are no such restrictions on the recipient mailbox, so that such a small mail gets filtered. There is no NDR, not sure what happened to the mail. Nothing in queue also. IT was addressed to only two recepient and both have them have not received the mail. I use exchange 2003 SP1 on windows 2003 SP1 Regards Praveen R --------------------------------- Brings words and photos together (easily) with PhotoMail - it's free and works with Yahoo! Mail.