SMTP Connector Logs and SPAM

SMTP Connector Logs and SPAM

I am trying to determine what kind of traffic this is:

22:09:42 66.196.82.7 - - 0
22:09:42 66.196.82.7 EHLO - 0
22:09:42 66.196.82.7 - - 0
22:09:42 66.196.82.7 MAIL - 0
22:09:42 66.196.82.7 - - 0
22:09:42 66.196.82.7 RCPT - 0
22:09:42 66.196.82.7 - - 0
22:09:42 66.196.82.7 DATA - 0
22:09:42 66.196.82.7 - - 0
22:09:45 66.196.82.7 - - 0
22:09:45 66.196.82.7 QUIT - 0
22:09:45 66.196.82.7 - - 0

This was a test message from another server that looks completely differant:

22:09:14 68.15.88.200 EHLO - 250
22:09:14 68.15.88.200 MAIL - 250
22:09:21 68.15.88.200 RCPT - 250
22:09:21 68.15.88.200 DATA - 250
22:09:21 68.15.88.200 QUIT - 240

Are the logs just from a differant type of server or is this from SPAMMER or 
attacker

TIA,

Steve

date: Fri, 14 Mar 2008 15:14:04 -0700 author: Steve Wofford