Hello, Exchange 2007 on WinServer2003... Fresh installation... Accepted Domain created... Send connector created... no more configuration made... internal IP has a NAT... when you send mail to yahoo, hotmail, etc, the message is going to the bulk junk folder... My external IP is static, and not in any Black lists... Mx records, PTR and SPF records are all well done... here is a header from yahoo.com: From =?iso-8859-3?Q?=A9brahim_Can_xxxxxx?= Mon Sep 17 23:14:03 2007Return-Path: <ibrahim@xxxxxxx.xxx>Authentication-Results: mta303.mail.re4.yahoo.com from=xxxxxxxx.xxx; domainkeys=neutral (no sig)Received: from 213.xxx.xxx.xx (EHLO xxxxxx.xxxxxxxxx.xxx) (213.xxx.xxx.xx) by mta303.mail.re4.yahoo.com with SMTP; Mon, 17 Sep 2007 23:14:10 -0700Received: from xxxxxxx.xxxxxxx.xxx ([10.187.86.50]) byxxxxxxx.xxxxxxx.xxx ([10.187.86.50]) with mapi; Tue, 18 Sep 200709:14:04 +0300From: =?iso-8859-3?Q?=A9brahim_Can_xxxxxxxx?= <ibrahim@xxxxxxxx.xxx>To: "xxxxxxx@yahoo.com" <xxxxxx@yahoo.com>Date: Tue, 18 Sep 2007 09:14:03 +0300Subject: denemeThread-Topic: denemeThread-Index: AQHH+bscyKGOYB1mKEGfBh9Mx5sJrw==Message-ID: <D37C047035D77149B62B708B644A451D06A86013@xxxxx.xxxxxx.xxx>Accept-Language: en-US, tr-TRContent-Language: en-USacceptlanguage: en-US, tr-TRContent-Type: multipart/alternative;boundary="_000_D37C047035D77149B62B708B644A451D06A86013iletisimxxxxxxx_"MIME-Version: 1.0Content-Length: 700 what will be the reason? in the header the private IP is included? how could this will change? Thanks...

there are a lot of things that spam filters would use to make their determination. part is the images and content of your message, another could be your IP range. is this a "professional" business IP range?

Yes, this is a "professional" business IP range... No image or something else included to the messages... this is not the problem... I have to solve the header information, but have no idea...