Semi-OT, A new kind of attack???

From: Nicolas Riendeau (no email)
Date: Sun Jun 01 2003 - 14:38:34 EDT

Hi!

I got two SMTP (ESMTP actually) sessions that looked like the one I've copied below
today and I was wondering if anybody might know what they're trying to do (keep
company to my server? (-; (-; )...

Have a nice day!

Nick

Transcript of session follows.

Out: 220 myhostname.mydomain.tld ESMTP NO UCE
In: EHLO ZUZU
Out: 250-myhostname.mydomain.tld
Out: 250-PIPELINING
Out: 250-SIZE 10240000
Out: 250-VRFY
Out: 250-ETRN
Out: 250 8BITMIME
In: MAIL FROM: <>
Out: 250 Ok
In: RCPT TO: <>
Out: 250 Ok
In: RSET
Out: 250 Ok
In: NOOP
Out: 250 Ok
In: NOOP

... (NOOPs...)

In: NOOP
Out: 250 Ok
In: NOOP
Out: 250 Ok
Out: 421 Error: too many errors

Session aborted, reason: too many errors






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