Recently we began seeing lots of these log entries on our off-site mx smtp host. I have googled this but I am not clear from what I have read if this is something we can stop altogether or should even worry about. Comments? Logwatch. . . --------------------- sendmail Begin ------------------------ SMTP SESSION, MESSAGE, OR RECIPIENT ERRORS ------------------------------------------ WARNING!!!! Possible Attack: Attempt from 104.Red-83-50-106.dynamicIP.rima-tde.net [83.50.106.104] with: command=HELO/EHLO, count=3: 1 Time(s) -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos