> I have checked my Server a lot of mails are in queue and those mails > are generated from our server and some body use my server and it's > happened every weekend. All mails are generated and send to > Yahoo,Gmail,Hotmail. I don't know those all senders address and dont > have mailbox in server. How do i protect my server. Please help me > anyone.
Open relay? Try http://mxtoolbox.com/diagnostic.aspx and post back the result regards nic
