---------- Original Message ----------------------------------
From: Len Conrad <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Date: Thu, 19 Dec 2002 16:28:06 -0600

>
>
>>  In:  220 X1 NT-ESMTP Server email.abc.net (IMail 7.05 356740-2)
>>  Out: EHLO mgw1.geeksnet.com
>>  In:  250-email.abc.net says hello
>>  In:  250-SIZE 0
>>  In:  250-8BITMIME
>>  In:  250-DSN
>>  In:  250-ETRN
>>  In:  250-AUTH LOGIN CRAM-MD5
>>  In:  250-AUTH=3DLOGIN
>>  In:  250 EXPN
>>  Out: MAIL FROM:<> SIZE=3D2304
>
>... interesting decimal number  :))
>
>>  In:  501 bogus mail from
>>  Out: RSET
>>  In:  250 ok its reset
>>  Out: QUIT
>>
>>
>>Mgw1.geeksnet.com is my server.  I'm getting tons of these.  Is this a
>>dictionary attack?
>
>no, it's just your server refusing null senders, violating RFC.
>

Isn't his server sending a bounce and the receiving server (Imail in this case) 
rejecting the message?

Chris Scott                 

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