What is that in my mainlog logs ?
mx2.mail.yahoo.com [67.28.114.36]: 421 VS5-MF Excessive unknown recipients - possible Open Relay
http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.4.5)
2004-09-01 10:14:50 1C2Kdv-0001wV-BX SMTP error from remote mailer after MAIL FROM:<mail_999@???> SIZE=4910: host mx3.mail.yahoo.com [64.156.215.7]: 421 VS5-MF Excessive unknown recipients - possible Open Relay
http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.4.5)
2004-09-01 10:14:51 1C2Kdv-0001wV-BX SMTP error from remote mailer after MAIL FROM:<mail_999@???> SIZE=4910: host mx4.mail.yahoo.com [216.155.197.59]: 421 VS5-MF Excessive unknown recipients - possible Open Relay
http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.4.5)
2004-09-01 10:14:51 1C2Kdv-0001wV-BX == zuniya@??? R=dnslookup T=remote_smtp defer (0): SMTP error from remote mailer after MAIL FROM:<mail_999@???> SIZE=4910: host mx4.mail.yahoo.com [216.155.197.59]: 421 VS5-MF Excessive unknown recipients - possible Open Relay
http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.4.5)
