Our System receive ex. This MSG

The original message was received at Tue, 25 Mar 2008 16:20:47 +0100 from localhost [127.0.0.1]

   ----- Transcript of session follows ----- ... while talking to mxbw.bluewin.ch.:
<<< 451 No thanks. (How about PTR records?) ... while talking to mxzhh.bluewin.ch.:
>>> QUIT
<<< 451 No thanks. (How about PTR records?) ... while talking to mxzhb.bluewin.ch.:
>>> QUIT
<<< 451 No thanks. (How about PTR records?) <niesen18@bluewin.ch>... Deferred: 451 No thanks. (How about PTR records?)
Warning: message still undelivered after 4 hours Will keep trying until message is 5 days old


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