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 at Harte-Lyne.ca
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