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Old 23rd September 2005, 05:35
lexcomputer lexcomputer is offline
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Question Mandriva with ISPConfig for Postfix sent mail to Yahoo & Hotmail

When I just finished installing ISPConfig(1-2 minutes), my email was sent to Yahoo successfully in Mail Box. When the time pass for about 1 hours, my email that sent laster will be in Bulk in Yahoo. Do anyone has any idea.
Any change that ISPConfig made?

I use Mandriva, Postfix with default value when install, Co-location server without own DNS. My ISP use PRT Record in DNS, which they claim that it is ok.

thanks all.
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Old 23rd September 2005, 09:04
till till is offline
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Please check if your server is an open mail relay, that means that everyone can send an email trough your server to domains that are not hosted on your server (e.g. yahoo.com or aol.com) without having to authenticate.
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Old 23rd September 2005, 09:28
lexcomputer lexcomputer is offline
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And I am already installed ISPConfig.

"open mail relay " how can I check it? , how can I fix it?

thanks

Last edited by lexcomputer; 23rd September 2005 at 09:34.
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Old 23rd September 2005, 09:33
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Try to send an email to your yahoo account with SMTP-Authentication disabled in your email client. If you do not get an error in your email client, that sending of this email is impossible, you have an open relay server.
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Old 23rd September 2005, 09:50
lexcomputer lexcomputer is offline
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I change setting in outlook express, uncheck at server require authentication. Then I got error message. It said server required authentication.
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Old 23rd September 2005, 09:59
lexcomputer lexcomputer is offline
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Default And this is a header of email that I sent out

Return-Path: <tawan@domain2.com>
X-Original-To: tawan@domain2.com
Delivered-To: web1_tawan@www.domain1.com
Received: from fujitsu (p56-nasbkkST8.C.csloxinfo.net [202.183.173.184])
by www.domain1.com (Postfix) with ESMTP id 62434264228
for <tawan@domain2.com>; Fri, 23 Sep 2005 14:52:21 +0700 (ICT)
Message-ID: <004201c5ba93$75323270$b8adb7ca@fujitsu>
From: "tawan" <tawan@domain2.com>
To: <tawan@domain2.com>
Subject: test me
Date: Fri, 16 Sep 2005 14:51:26 +0700
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_003D_01C5BACE.1CF0CE60"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.2180
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on
www.domain1.com
X-Spam-Level: *
X-Spam-Status: No, score=1.3 required=5.0 tests=DATE_IN_PAST_96_XX,
HTML_90_100,HTML_MESSAGE autolearn=no version=3.0.4
Status:


--------------------------------------
Is there any mistake??? coz when it sent to yahoo or hot mail, it will be in Bulk and junk mail folder...???

Last edited by lexcomputer; 23rd September 2005 at 10:02.
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