Hi All, I'm using Microsoft Exchange Server 5.5. There hundreds of outgoing messages that are queued on my server which are viewed from IMC/queues/ Outbound messages awaiting delivery daily. This messages cannot be identified because there are no originator or the originator are all unknown. And if I delete them it will re appear 3 to 4 times before permanently be deleted. Is this a virus thing or I have problem on my system? Did anyone experienced the same problem? How will you deal with this problem. I'm using Antigen Mail Shield Software. Thanks, Regards,