Re: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Rich
We've been getting upwards of 30k messages a day which are NDR's with our
domain name, but with a randomly generated username.  We found that although
our mail server is more then capable of handling the volume, it was creating
a lot of lag with POP3 accounts when the server was being hammered with the
dang things.  Seems this is getting to be the latest craze, spamming with
legit domain names attached to a random username.

So what we did was to set up two BSD/Postfix boxes that filter based on a
list of our valid users which we update as needed.  The incoming NDR's are
then trashed at the BSD/Postfix level and Imail and Declude don't have to
deal with them.  This is kind of like Len Conrads Imgate, but it only checks
for a valid username before relaying the email into the Imail box.

Rich


- Original Message - 
From: declude [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 11, 2004 4:05 AM
Subject: Possible Spam: RE: [Declude.JunkMail] NDR's


 Markus

 We are seeing 1 in 10 email's which are NDR's and are nothing to do with
the german-politic spam messages.

 Look's like we have a new problem, which is growing quickly.

 Scott I hope you can help on this one or anyone else...

 Kevin


 -- Original Message --
 From: Markus Gufler [EMAIL PROTECTED]
 Reply-To: [EMAIL PROTECTED]
 Date:  Fri, 11 Jun 2004 12:49:55 +0200

 
  We are seeing a lot of NDR's coming from ligit servers, with
  a spoofed user name, but a correct domain name.
 
  What would be the best way to deal with this ever growing problem.
 
 Yipiieee  :-)
 I'm not the only one having this problem.
 
 As I can see this are NDR's from current spam messages having forged but
 real existing mailfrom addresses and a lot of random recipient names in
 combination with valid domains. (german-politic spam messages send from
 sober.g zombies)
 
 Markus
 
 
 ---
 [This E-mail was scanned for viruses by Declude Virus
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 [ PS. This email has been securely processed by Sorting Office ]
 
 
 
 __
 This email has been Processed using Sorting Office Email Services
 This email and any attachments are confidential to the intended
 recipient and may also be privileged. If you are not the intended
 recipient please delete it from your system and notify the sender.
 You should not copy it or use it for any purpose nor disclose or
 distribute its contents to any other person.

Sorting Office Email Filter Solution
 Anti-Virus | Anti-Spam
 For kad.co.uk
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RE: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Jeff Maze
Was there a HOWTO you found online to do this?  Wouldn't mind attempting
this when I get a chance..
 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rich
Sent: Friday, June 11, 2004 10:33 AM
To: [EMAIL PROTECTED]
Subject: Re: Possible Spam: RE: [Declude.JunkMail] NDR's

We've been getting upwards of 30k messages a day which are NDR's with our
domain name, but with a randomly generated username.  We found that although
our mail server is more then capable of handling the volume, it was creating
a lot of lag with POP3 accounts when the server was being hammered with the
dang things.  Seems this is getting to be the latest craze, spamming with
legit domain names attached to a random username.

So what we did was to set up two BSD/Postfix boxes that filter based on a
list of our valid users which we update as needed.  The incoming NDR's are
then trashed at the BSD/Postfix level and Imail and Declude don't have to
deal with them.  This is kind of like Len Conrads Imgate, but it only checks
for a valid username before relaying the email into the Imail box.

Rich


- Original Message -
From: declude [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 11, 2004 4:05 AM
Subject: Possible Spam: RE: [Declude.JunkMail] NDR's


 Markus

 We are seeing 1 in 10 email's which are NDR's and are nothing to do with
the german-politic spam messages.

 Look's like we have a new problem, which is growing quickly.

 Scott I hope you can help on this one or anyone else...

 Kevin


 -- Original Message --
 From: Markus Gufler [EMAIL PROTECTED]
 Reply-To: [EMAIL PROTECTED]
 Date:  Fri, 11 Jun 2004 12:49:55 +0200

 
  We are seeing a lot of NDR's coming from ligit servers, with
  a spoofed user name, but a correct domain name.
 
  What would be the best way to deal with this ever growing problem.
 
 Yipiieee  :-)
 I'm not the only one having this problem.
 
 As I can see this are NDR's from current spam messages having forged but
 real existing mailfrom addresses and a lot of random recipient names in
 combination with valid domains. (german-politic spam messages send from
 sober.g zombies)
 
 Markus
 
 
 ---
 [This E-mail was scanned for viruses by Declude Virus
(http://www.declude.com)]
 
 ---
 This E-mail came from the Declude.JunkMail mailing list.  To
 unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
 type unsubscribe Declude.JunkMail.  The archives can be found
 at http://www.mail-archive.com.
 
 
 [ PS. This email has been securely processed by Sorting Office ]
 
 
 
 __
 This email has been Processed using Sorting Office Email Services
 This email and any attachments are confidential to the intended
 recipient and may also be privileged. If you are not the intended
 recipient please delete it from your system and notify the sender.
 You should not copy it or use it for any purpose nor disclose or
 distribute its contents to any other person.

Sorting Office Email Filter Solution
 Anti-Virus | Anti-Spam
 For kad.co.uk
 ---
 [This E-mail was scanned for viruses by Declude Virus
(http://www.declude.com)]

 ---
 This E-mail came from the Declude.JunkMail mailing list.  To
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 type unsubscribe Declude.JunkMail.  The archives can be found
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Re: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Rich
I'm working on creating one, a version of what we have, it's started at
http://www.kendra.com/Support/PerUser_Gateway/index.htm, I'm trying to
finish it today.

Rich


- Original Message - 
From: Jeff Maze [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 11, 2004 8:42 AM
Subject: RE: Possible Spam: RE: [Declude.JunkMail] NDR's


 Was there a HOWTO you found online to do this?  Wouldn't mind attempting
 this when I get a chance..


 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Rich
 Sent: Friday, June 11, 2004 10:33 AM
 To: [EMAIL PROTECTED]
 Subject: Re: Possible Spam: RE: [Declude.JunkMail] NDR's

 We've been getting upwards of 30k messages a day which are NDR's with our
 domain name, but with a randomly generated username.  We found that
although
 our mail server is more then capable of handling the volume, it was
creating
 a lot of lag with POP3 accounts when the server was being hammered with
the
 dang things.  Seems this is getting to be the latest craze, spamming with
 legit domain names attached to a random username.

 So what we did was to set up two BSD/Postfix boxes that filter based on a
 list of our valid users which we update as needed.  The incoming NDR's are
 then trashed at the BSD/Postfix level and Imail and Declude don't have to
 deal with them.  This is kind of like Len Conrads Imgate, but it only
checks
 for a valid username before relaying the email into the Imail box.

 Rich


 - Original Message -
 From: declude [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Friday, June 11, 2004 4:05 AM
 Subject: Possible Spam: RE: [Declude.JunkMail] NDR's


  Markus
 
  We are seeing 1 in 10 email's which are NDR's and are nothing to do with
 the german-politic spam messages.
 
  Look's like we have a new problem, which is growing quickly.
 
  Scott I hope you can help on this one or anyone else...
 
  Kevin
 
 
  -- Original Message --
  From: Markus Gufler [EMAIL PROTECTED]
  Reply-To: [EMAIL PROTECTED]
  Date:  Fri, 11 Jun 2004 12:49:55 +0200
 
  
   We are seeing a lot of NDR's coming from ligit servers, with
   a spoofed user name, but a correct domain name.
  
   What would be the best way to deal with this ever growing problem.
  
  Yipiieee  :-)
  I'm not the only one having this problem.
  
  As I can see this are NDR's from current spam messages having forged
but
  real existing mailfrom addresses and a lot of random recipient names in
  combination with valid domains. (german-politic spam messages send from
  sober.g zombies)
  
  Markus
  
  
  ---
  [This E-mail was scanned for viruses by Declude Virus
 (http://www.declude.com)]
  
  ---
  This E-mail came from the Declude.JunkMail mailing list.  To
  unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
  type unsubscribe Declude.JunkMail.  The archives can be found
  at http://www.mail-archive.com.
  
  
  [ PS. This email has been securely processed by Sorting Office ]
  
  
  
  __
  This email has been Processed using Sorting Office Email Services
  This email and any attachments are confidential to the intended
  recipient and may also be privileged. If you are not the intended
  recipient please delete it from your system and notify the sender.
  You should not copy it or use it for any purpose nor disclose or
  distribute its contents to any other person.
 
 Sorting Office Email Filter Solution
  Anti-Virus | Anti-Spam
  For kad.co.uk
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  [This E-mail was scanned for viruses by Declude Virus
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  type unsubscribe Declude.JunkMail.  The archives can be found
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RE: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Jeff Maze
Great.. Thanks.. 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rich
Sent: Friday, June 11, 2004 10:50 AM
To: [EMAIL PROTECTED]
Subject: Re: Possible Spam: RE: [Declude.JunkMail] NDR's

I'm working on creating one, a version of what we have, it's started at
http://www.kendra.com/Support/PerUser_Gateway/index.htm, I'm trying to
finish it today.

Rich


- Original Message -
From: Jeff Maze [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 11, 2004 8:42 AM
Subject: RE: Possible Spam: RE: [Declude.JunkMail] NDR's


 Was there a HOWTO you found online to do this?  Wouldn't mind attempting
 this when I get a chance..


 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Rich
 Sent: Friday, June 11, 2004 10:33 AM
 To: [EMAIL PROTECTED]
 Subject: Re: Possible Spam: RE: [Declude.JunkMail] NDR's

 We've been getting upwards of 30k messages a day which are NDR's with our
 domain name, but with a randomly generated username.  We found that
although
 our mail server is more then capable of handling the volume, it was
creating
 a lot of lag with POP3 accounts when the server was being hammered with
the
 dang things.  Seems this is getting to be the latest craze, spamming with
 legit domain names attached to a random username.

 So what we did was to set up two BSD/Postfix boxes that filter based on a
 list of our valid users which we update as needed.  The incoming NDR's are
 then trashed at the BSD/Postfix level and Imail and Declude don't have to
 deal with them.  This is kind of like Len Conrads Imgate, but it only
checks
 for a valid username before relaying the email into the Imail box.

 Rich


 - Original Message -
 From: declude [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Friday, June 11, 2004 4:05 AM
 Subject: Possible Spam: RE: [Declude.JunkMail] NDR's


  Markus
 
  We are seeing 1 in 10 email's which are NDR's and are nothing to do with
 the german-politic spam messages.
 
  Look's like we have a new problem, which is growing quickly.
 
  Scott I hope you can help on this one or anyone else...
 
  Kevin
 
 
  -- Original Message --
  From: Markus Gufler [EMAIL PROTECTED]
  Reply-To: [EMAIL PROTECTED]
  Date:  Fri, 11 Jun 2004 12:49:55 +0200
 
  
   We are seeing a lot of NDR's coming from ligit servers, with
   a spoofed user name, but a correct domain name.
  
   What would be the best way to deal with this ever growing problem.
  
  Yipiieee  :-)
  I'm not the only one having this problem.
  
  As I can see this are NDR's from current spam messages having forged
but
  real existing mailfrom addresses and a lot of random recipient names in
  combination with valid domains. (german-politic spam messages send from
  sober.g zombies)
  
  Markus
  
  
  ---
  [This E-mail was scanned for viruses by Declude Virus
 (http://www.declude.com)]
  
  ---
  This E-mail came from the Declude.JunkMail mailing list.  To
  unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
  type unsubscribe Declude.JunkMail.  The archives can be found
  at http://www.mail-archive.com.
  
  
  [ PS. This email has been securely processed by Sorting Office ]
  
  
  
  __
  This email has been Processed using Sorting Office Email Services
  This email and any attachments are confidential to the intended
  recipient and may also be privileged. If you are not the intended
  recipient please delete it from your system and notify the sender.
  You should not copy it or use it for any purpose nor disclose or
  distribute its contents to any other person.
 
 Sorting Office Email Filter Solution
  Anti-Virus | Anti-Spam
  For kad.co.uk
  ---
  [This E-mail was scanned for viruses by Declude Virus
 (http://www.declude.com)]
 
  ---
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  type unsubscribe Declude.JunkMail.  The archives can be found
  at http://www.mail-archive.com.
 

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RE: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Markus Gufler

 We've been getting upwards of 30k messages a day which are 
 NDR's with our domain name, but with a randomly generated 
 username.  We found that although our mail server is more 
 then capable of handling the volume, it was creating a lot of 
 lag with POP3 accounts when the server was being hammered 
 with the dang things.  Seems this is getting to be the latest 
 craze, spamming with legit domain names attached to a random username.

Thats not the current problem.
The problem are NDR's send back to real existing email addresses because the
original message has had only one (or a few) valid recipient addresses but a
lot of random generated name parts of the email address. (in sober.g case
this are one valid recipient and 39 usualy inexistant, random generated
addresses)

Your gateway would filter out this type of NDRs

Markus



---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.


RE: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread declude
Hi Markus,

I know what you mean, just like the list below

I have a customer, nst.ie, and this is what is happening to them.

Kevin


QD:\IMail\spool\Ddbdf01e626ff.SMD
Hkadmail.co.uk
WD:\Imail\kadmail_co_uk
E0,
S[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
NRCPT TO: [EMAIL PROTECTED]
R[EMAIL PROTECTED]
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R[EMAIL PROTECTED]

-- Original Message --
From: Markus Gufler [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
Date:  Fri, 11 Jun 2004 18:06:41 +0200


 We've been getting upwards of 30k messages a day which are 
 NDR's with our domain name, but with a randomly generated 
 username.  We found that although our mail server is more 
 then capable of handling the volume, it was creating a lot of 
 lag with POP3 accounts when the server was being hammered 
 with the dang things.  Seems this is getting to be the latest 
 craze, spamming with legit domain names attached to a random username.

Thats not the current problem.
The problem are NDR's send back to real existing email addresses because the
original message has had only one (or a few) valid recipient addresses but a
lot of random generated name parts of the email address. (in sober.g case
this are one valid recipient and 39 usualy inexistant, random generated
addresses)

Your gateway would filter out this type of NDRs

Markus



---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
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This email has been Processed using Sorting Office Email Services 
This email and any attachments are confidential to the intended 
recipient and may also be privileged. If you are not the intended 
recipient please delete it from your system and notify the sender. 
You should not copy it or use it for any purpose nor disclose or 
distribute its contents to any other person.

   Sorting Office Email Filter Solution
Anti-Virus | Anti-Spam 
For kad.co.uk
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RE: Possible Spam: RE: [Declude.JunkMail] NDR's

2004-06-11 Thread Kevin Bilbee
looks to me that the spammer is just using a dictionary of user names and
sending to them by appending on the domain name in the hopes that they may
get a hit on another mailbox.


Kevin Bilbee




 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] Behalf Of declude
 Sent: Friday, June 11, 2004 9:35 AM
 To: [EMAIL PROTECTED]
 Subject: RE: Possible Spam: RE: [Declude.JunkMail] NDR's


 Hi Markus,

 I know what you mean, just like the list below

 I have a customer, nst.ie, and this is what is happening to them.

 Kevin


 QD:\IMail\spool\Ddbdf01e626ff.SMD
 Hkadmail.co.uk
 WD:\Imail\kadmail_co_uk
 E0,
 S[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
 NRCPT TO: [EMAIL PROTECTED]
 R[EMAIL PROTECTED]
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 -- Original Message --
 From: Markus Gufler [EMAIL PROTECTED]
 Reply-To: [EMAIL PROTECTED]
 Date:  Fri, 11 Jun 2004 18:06:41 +0200

 
  We've been getting upwards of 30k messages a day which are
  NDR's with our domain name, but with a randomly generated
  username.  We found that although our mail server is more
  then capable of handling the volume, it was creating a lot of
  lag with POP3 accounts when the server was being hammered
  with the dang things.  Seems this is getting to be the latest
  craze, spamming with legit domain names attached to a random username.
 
 Thats not the current problem.
 The problem are NDR's send back to real existing email addresses
 because the
 original message has had only one (or a few) valid recipient
 addresses but a
 lot of random generated name parts of the email address. (in sober.g case
 this are one valid recipient and 39 usualy inexistant, random generated
 addresses)
 
 Your gateway would filter out this type of NDRs
 
 Markus
 
 
 
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