Linux Ethernet Bridging - Apr 2007 - [Bridge] Returned mail: see transcript for details

The original message was received at Sat, 30 Aug 2003 15:25:05 +0700 (OMSST)
from host002.rtk-48.sotline.ru [81.176.48.2]

   ----- The following addresses had permanent fatal errors -----
<niasia@infomsk.ru>
    (reason: 550 5.1.1 <niasia@infomsk.ru>... User unknown)

   ----- Transcript of session follows -----
... while talking to mx.infomsk.ru.:
>>> DATA
<<< 550 5.1.1 <niasia@infomsk.ru>... User unknown
550 5.1.1 <niasia@infomsk.ru>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)
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Size: 922 bytes
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Url :
http://lists.linux-foundation.org/pipermail/bridge/attachments/20030830/e678a045/attachment-0002.bin

The original message was received at Wed, 10 Sep 2003 13:48:41 -0600
from [61.188.198.129]

   ----- The following addresses had permanent fatal errors -----
<jhartman@auracom.net>
    (reason: 550 unknown user <jhartman@auracom.net>)

   ----- Transcript of session follows -----
... while talking to mail.auracom.com.:
>>> RCPT To:<jhartman@auracom.net>
<<< 550 unknown user <jhartman@auracom.net>
550 5.1.1 <jhartman@auracom.net>... User unknown
-------------- next part --------------
Skipped content of type message/delivery-status-------------- next part
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Skipped content of type multipart/mixed-------------- next part --------------
This mail is probably spam.  The original message has been attached
along with this report, so you can recognize or block similar unwanted
mail in future.  See http://spamassassin.org/tag/ for more details.

Content preview:  This is a MIME-encapsulated message The original
  message was received at Wed, 10 Sep 2003 13:48:41 -0600 from
  [61.188.198.129] ----- The following addresses had permanent fatal
  errors ----- <jhartman@auracom.net> (reason: 550 unknown user
  <jhartman@auracom.net>) [...] 

Content analysis details:   (7.30 points, 5 required)
GENERIC_VIAGRA     (2.0 points)  BODY: Plugs "Generic Viagra"
MARKETING_PARTNERS (2.1 points)  BODY: Claims you registered with some kind of
partner
SEE_FOR_YOURSELF   (0.5 points)  BODY: See for yourself
OFFERS_ETC         (0.3 points)  BODY: Stop with the offers, coupons, discounts
etc!
HTML_LINK_CLICK_HERE (0.1 points)  BODY: HTML link text says "click
here"
HTML_30_40         (0.6 points)  BODY: Message is 30% to 40% HTML
HTML_FONT_COLOR_RED (0.1 points)  BODY: HTML font color is red
HTML_MESSAGE       (0.1 points)  BODY: HTML included in message
HTML_FONT_COLOR_GREEN (0.7 points)  BODY: HTML font color is green
HTML_FONT_BIG      (0.2 points)  BODY: FONT Size +2 and up or 3 and up
HTML_SHOUTING3     (0.1 points)  BODY: HTML has very strong "shouting"
markup
CLICK_BELOW        (0.5 points)  Asks you to click below