----- Original Message ----
> From: Dimitrios Karapiperis <dim...@thessaloniki.gr>
> To: postfix-users@postfix.org
> 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: crypto...@yahoo.com



      

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