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Adding an additional SMTP Server

Posted on 2006-11-30
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Last Modified: 2010-03-06
I would like to setup an additional SMTP server on my SBS box that people on the WAN can access via a non-standard port (6060) and use this to send email to any domain they wish.

I would also like to require authentication preferably using a users AD credentials username/password NOT username@domain.com/pasword, or in the worst case creating a "shared" account just for accessing the server (smtpuser/smtppassword).

After fumbling around with SBS, I couldn't get this to work, so I installed a 3rd party SMTP server and got this working in seconds.  I really would like to  figure out how to do this with windows components.
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Question by:ErnestForman
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Accepted Solution

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Sembee earned 500 total points
ID: 18048363
This is very easy to do.
The basic configuration is already there - as Exchange is set to allow anyone who authenticates to relay by default.
All you have to do is open Exchange system manager, go down to Servers, <your server, Protocols, SMTP. Right click on the SMTP VS and choose Properties. On the first tab click Advanced and then add. In the box for TCP/IP port enter 6060 and leave everything else alone. Apply/OK out.

Simon.
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Author Comment

by:ErnestForman
ID: 18054292
Thanks for looking.

That only allows a user to send email to the local domain.  If a user wants to send email outside of their domain, then they get an error like

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was somedude@gmail.com'. Subject 'Fix my email', Account: 'ABC', Server: 'mail.example.com', Protocol: SMTP, Server Response: '550 5.7.1 Unable to relay for somedude@gmail.com', Port: 6060, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

Does this help narrow down the problem?
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LVL 104

Expert Comment

by:Sembee
ID: 18055154
Have you set the sending client to authenticate? If not, then the error you are getting is normal - that is Exchange doing its job.

Simon.
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