Re: Problems sending mail with Windows 2003 server's SMTP server (I'm also using the integrated POP3 service)

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From: Kristofer Gafvert (kgafvert_at_NEWSilopia.com)
Date: 06/09/04 

Date: Wed, 9 Jun 2004 20:41:53 +0200

Hello,

You need to understand the difference between relaying and access. Anonymous
Access does not mean that anyone can relay. By default, you need to
authenticate to the SMTP server, to be able to send emails. I recommend that
you do not change this behavior, unless you use it in a controlled
environment, and can restrict relaying to IP Addresses.

So, you need to configure the client to authenticate to the SMTP server, or
change the default behavior of the SMTP service.

For more information:

http://www.ilopia.com/Articles/WindowsServer2003/EmailServer.aspx#ConfigureEmailClient 

-- 
Regards,
Kristofer Gafvert - IIS MVP
http://www.ilopia.com - When you need help!
"Mike Herchel" <michael.herchel[@]wavecrestlabs.com> wrote in message
news:%23YDkq%23kTEHA.2580@TK2MSFTNGP12.phx.gbl...
> Hi,
>
>             I am setting up POP3 accounts for my users. I am using the
POP3
> and SMTP services built into Windows 2003 Server Std Edition. My users can
> access their POP3 accounts, but cannot send mail to an external address
> (they can send to addresses within the same email domain). When trying to
> email to an external address via Outlook Express, we get the following
> error:
>
>
>
>           Server Response: '550 5.7.1 Unable to relay for
test@hotmail.com',
> Port:
>
>           25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79
>
>
>
>
>
> Note: this is installed on a Windows Server 2003 domain controller. The
> Active Directory domain and the internet domain are not the same.
>
>
>
>
>
> Notes:
>
>           I do not have Secure Password Authentication enabled. (when I
> enable this option, and make the associated changes to OE, it does the
same
> thing)
>
>           I do have the internet (email) domain listed in the "Default
SMTP
> Service" under the IIS Manager
>
>           I have anonymous access selected in the properties of the
"Default
> SMTP Service"
>
>
>
>
>
> Does anyone have any suggestions?
>
>
>
> Thanks!!
>
>

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