For some reason, I can't seem to stop hackers from performaing DoS against my IPCop fw & MailScanner server. I get alot of these in my /var/log/maillog and the boxes get locked up:<br><br>Mar 1 20:12:48 mars sendmail[27017]: k220vlXF027017:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br>Mar 1 20:12:48 mars sendmail[27019]: k220vmrk027019:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br>Mar 1 20:12:48 mars sendmail[27018]: k220vlM8027018:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br>Mar 1 20:12:49 mars sendmail[27020]: k220vm8s027020:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br>Mar 1 20:12:49 mars sendmail[27023]: k220vngJ027023:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br>Mar 1 20:12:49 mars sendmail[27021]: k220vmjG027021:
<a href="http://69-165-202-64.miamfl.adelphia.net">69-165-202-64.miamfl.adelphia.net</a> [<a href="http://69.165.202.64">69.165.202.64</a>] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA<br><br>What can I do?