Unwanted guest is trying to relay

15 May 2001

      I had this in my logs

isguzar sendmail[5670]: f4FKqSd05670: ruleset=check_rcpt,
arg1=, relay=user115.mdi.ca [207.230.250.115],
reject=550 5.7.1 ...
Relaying denied

Ok AFAIU he couldnot get the relay

and 

from=, size=0, class=0, nrcpts=0, proto=SMTP,
daemon=MTA, relay=user115.mdi.ca [207.230.250.115]

but this one I did not get did he managed to use me as his relay or
not. If he did what steps can I take to make life harder to outsiders

I am using the sednmail 8.11.2-4 that comes with 7.1

-- 
Togan Muftuoglu