Im seeing similar stuff. Some spammer has set the reply-to address to
[EMAIL PROTECTED]

BB

on Wed, Jun 18, 2003 at 03:25:01PM +1000, David <[EMAIL PROTECTED]> wrote:
> 
> I'm concerned that I'm being attacked in some way that I don't understand.
> I've checked my logs and found over 400 "unknown user" messages for
> <[EMAIL PROTECTED]>. Then I got the following MAILER-DAEMON email
> telling me the address is undeliverable.
> 
> I can't figure out why I should suddenly get this one apparently
> inappropriate MAILER-DAEMON email.
> 
> I am a legitimate relay for mydomain.com.au but user "rjnr" doesn't exist
> and never did.
> 
> Their are also 2000 other "unknown user" messages for this particular
> domain in this week's log, so it looks like some spammer has targetted
> this domain.
> 
> Am I worrying about nothing?
> 
> [Woody/Postfix, btw]
> ************************************************************************
> Date: Tue, 10 Jun 2003 08:50:56 +1000 (EST)
> From: Mail Delivery System <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Undelivered Mail Returned to Sender
> Parts/Attachments:
>    1   Shown     13 lines  Text, "Notification"
>    2   Shown    226 bytes  Message, "Delivery error report"
>    3   Shown    1.3 KB     Message, "Undelivered Message"
>    3.1 Shown     22 lines  Text
> ----------------------------------------
> 
> This is the Postfix program at host fast.kenpro.com.au.
> 
> I'm sorry to have to inform you that the message returned
> below could not be delivered to one or more destinations.
> 
> For further assistance, please send mail to <postmaster>
> 
> If you do so, please include this problem report. You can
> delete your own text from the message returned below.
> 
>                         The Postfix program
> 
> <[EMAIL PROTECTED]>: unknown user: "rjnr"
> 
>     [ Part 2: "Delivery error report" ]
> 
> Reporting-MTA: dns; fast.kenpro.com.au
> Arrival-Date: Tue, 10 Jun 2003 08:50:55 +1000 (EST)
> 
> Final-Recipient: rfc822; [EMAIL PROTECTED]
> Action: failed
> Status: 5.0.0
> Diagnostic-Code: X-Postfix; unknown user: "rjnr"
> 
>     [ Part 2: "Delivery error report" ]
> 
> Reporting-MTA: dns; fast.kenpro.com.au
> Arrival-Date: Tue, 10 Jun 2003 08:50:55 +1000 (EST)
> 
> Final-Recipient: rfc822; [EMAIL PROTECTED]
> Action: failed
> Status: 5.0.0
> Diagnostic-Code: X-Postfix; unknown user: "rjnr"
> 
> 
>     [ Part 3: "Undelivered Message" ]
> 
> Date: Mon, 9 Jun 2003 15:55:28 -0700
> From: Mail Delivery Subsystem <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: MAILER-DAEMON Returned mail: User unknown
> 
> The original message was received at 6/9/2003 3:55:27 PM -0100
> [218.79.218.34]
> ----- The following addresses had permanent fatal errors -----
> <[EMAIL PROTECTED]>
> (expanded from: <[EMAIL PROTECTED]>)
> 
> ----- Transcript of session follows -----
> mail.local: unknown Name: rjnr
> 550 <[EMAIL PROTECTED]>... User unknown
> 
> 
> Reporting-MTA: dns; mx1.mydomain.com.au
> Received-From-MTA: DNS; [218.79.218.34]
> Arrival-Date: Thu, 30 May 2002 01:14:32 -0600
> 
> Final-Recipient: RFC822; <[EMAIL PROTECTED]>
> X-Actual-Recipient: RFC822; [EMAIL PROTECTED]
> Action: failed
> Status: 5.1.1
> Last-Attempt-Date: 6/9/2003 3:55:27 PM -0100
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -- 
> SLUG - Sydney Linux User's Group - http://slug.org.au/
> More Info: http://lists.slug.org.au/listinfo/slug
-- 
SLUG - Sydney Linux User's Group - http://slug.org.au/
More Info: http://lists.slug.org.au/listinfo/slug

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