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262337Re: trusted Ip address spoofed?

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  • Daniel V. Reinhardt
    Feb 1, 2010
    • 0 Attachment
      ----- Original Message ----
      > From: Dimitrios Karapiperis <dimkar@...>
      > To: postfix-users@...
      > Sent: Mon, February 1, 2010 7:57:36 AM
      > Subject: trusted Ip address spoofed?
      >
      > Hi there
      >
      > I have a Postfix installation (postfix-2.6.5-1.rhel5) and I relay a couple of
      > remote ip addresses
      > (static adsl) of remote sites.
      >
      > I cannot figure out how a spam originator fired some e-mails through my mail
      > server
      > using a specific remote IP, which was relayed
      >
      > Return-Path:
      > Received: from hhyllw (smtp.domain.tld[111.222.333.444])
      > by smtp.thessaloniki.gr (Postfix) with ESMTP id 8DB72180C1
      > for ; Mon, 1 Feb 2010 08:49:00 +0200 (EET)
      > Received: from beoeb ([xxx.yyy.zzz.ccc])
      > by EADYCSRY (8.13.4/8.13.4) with SMTP id u4231584378453i6Ib016100
      > for ; Mon, 01 Feb 2010 08:48:56 +0200 (CDT)
      >
      > The 111.222.333.444 is the relayed trusted ip and xxx.yyy.zzz.ccc is the
      > malicious one.
      >
      >
      > How can I prevent such things?????
      >
      >
      > Thanks in advane
      > Dimitrios

      Dimitrios,

      Can you not hide the IP addresses, they are needed to help you out.

      Thanks,

      Daniel Reinhardt
      Website: www.cryptodan.com
      Email: cryptodan@...
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