[Dshield] Spam 101 Question

thomer forum at dshield.org
Sat Aug 6 20:53:53 GMT 2005



Jeff,
  Your mail server is definitely an open relay and that's why you have mail bounces, this is a transaction from your server:

220 charter.net ESMTP
ehlo test.com
250-charter.net
250-8BITMIME
250 SIZE 41943040
mail from: badperson at test.com
250 sender  ok
rcpt to: avictim at anywhere.net
250 recipient  ok
data
354 go ahead
Testing
.
250 ok:  Message 281655308 accepted

Notice how the above transaction allowed mail from badperson at test.com to go to avictim at anywhere.net?  That shouldn't happen.  The banner also says charter.net are you outsourcing your mail?  

thomer

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