Exchange 2003 Outgoing mail VERY SLOW


I have recently set up an exchange server in my company.
The e-mails from outside to inside and inside to inside are very fast.
The e-mails going from inside to outside are unexceptionally slow.
Does anyone know why this is?

Fell free to ask any additional questions.

Thank you,

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Slow upload speed on your ADSL line, perhaps.
gmwindowsAuthor Commented:
T1 line.
I don't think that it's the line's speed that is causing this issue.
Glen KnightCommented:
Could be a number of things.

Do you have SPAM/Virus software scanning outgoing mail?  If you uninstall this and reboot does the performance improve?

Do you send via a smarthost or DNS?  Are the DNS settings correct?
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gmwindowsAuthor Commented:
I have AV but nothing changes when i disable it.
I am not using smarthost.
I am using DNS and the settings are correct.
When i e-mail to my gmail for example it takes about an hour.
When i e-mail to hotmail it takes less than a second.
Also, how do i determine why some outside users are not able to get e-mails?
Glen KnightCommented:
Disabling the AV will not eliminate the problem if it is being caused by the AV it must be uninstalled.

If it's slow for some and not others it would suggest your external DNS configuration is not correct.

Check your settings against my article here:

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From your last comment, it sounds like you can't really be sure exactly where it is stalling.  You should check the headers in gmail.  It will show you at what stage in the journey it is getting stalled.  See guide here
gmwindowsAuthor Commented:
This is what the Header from Google reads.

Received: by with SMTP id o8cs256396qcm;
        Tue, 25 May 2010 14:34:39 -0700 (PDT)
Received: by with SMTP id v22mr5379225vcr.241.1274823279037;
        Tue, 25 May 2010 14:34:39 -0700 (PDT)
Return-Path: <>
Received: from ([111.222.333.444])
        by with ESMTP id b11si11993851vcx.35.2010.;
        Tue, 25 May 2010 14:34:38 -0700 (PDT)
Received-SPF: neutral ( 111.222.333.444 is neither permitted nor denied by best guess record for domain of client-ip=111.222.333.444;
Authentication-Results:; spf=neutral ( 111.222.333.444 is neither permitted nor denied by best guess record for domain of
Content-class: urn:content-classes:message
Subject: test7
MIME-Version: 1.0
Content-Type: multipart/related;
Date: Tue, 25 May 2010 16:43:54 -0400
X-MimeOLE: Produced By Microsoft Exchange V6.5
Message-ID: <>
X-MS-Has-Attach: yes
Thread-Topic: test7
Thread-Index: Acr8Sv2nl/JJMP7wThiayQHPuM7i7Q==
From: "My Name" <>
To: <>

This is a multi-part message in MIME format.

From what i see (and I could be wrong)
It delivers it to Google, but then it takes google several hours to deliver it to my account.
If you are better at reading this stuff than I am feel free to shed some lite on this.

Thank you!
gmwindowsAuthor Commented:
I did some more testing and realized that Google was actually the one that was being slow to receive e-mails.

But since you both aided in the resolution of this problem I will split the points between demazter and theras2000.
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