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Unable to send email - relay denied in Exchange 2003

Just set up a Windows 2003 Server with Exchange 2003. We are unable to send any emails from the server whilst relay is set off in the exchange manager. As soon as we enable relay it can send ok. I am using the same settings as on my old Windows 2000 server. THe emails get sent from an ASP page. DO we need any authentication as on the old code we used the Administrators username & password for the server however on the new code we do not. Could this have somehing to do with the problem?
Would appreciate any assistance anyone has to offer as this is my first installation of a server.
Thank you.
Tony Lopez
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mrbungle50
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mrbungle50
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2 Solutions
 
bugs021997Commented:
By default, all computers are denied relay access. Microsoft SMTP Service does not allow computers to relay unwanted mail through the virtual server. All computers are denied relay access except those that meet the authentication requirements that are specified in the Authentication box on the Access tab.

You will need to provide authentication or else what you can do is as below

1. Click Start, point to All Programs, point to Administrative Tools, and then click Internet Information Services (IIS) Manager.
2. Right-click Default SMTP Virtual Server, and then click Properties.
3. Click the Access tab.
4. Under Relay restrictions, click Relay, and then do one of the following:
          * Click Only the list below.
          * Click All except the list below.
5. Click Add.
6. Click the settings that you want to use, add the computers, the group of computers, or the domain that you want to specify as exceptions to the access setting that you selected in step 4, and then click OK three times.
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RipinCommented:
Configure your exchange connector to do sending.
follow these inst.
http://www.amset.info/exchange/smtp-connector.asp
Exchange don't need IIS SMTP at all.
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RipinCommented:
If this is your first installation, then remember to secure your Server.
Take a look at http://technet.microsoft.com/en-us/library/300d578b-c7ec-4ff0-978b-da0d6bb89ab1.aspx
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RipinCommented:
To test installation and possible errors or risk, download Best Practices Analyzer Tool and inspect all with that. To download go to http://www.microsoft.com/downloads/details.aspx?familyid=dbab201f-4bee-4943-ac22-e2ddbd258df3&displaylang=en
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mrbungle50Author Commented:
Thank you bugs. Whilst I din't configure using IIS, I configured the relay tab in the Exchange System Manager & working fine. Thank you also to you Ripin for all the valuable tips - I didn't need to set up a connector after I configured the relay tab adding an IP address & subnet mask. All the best guys. With thanks Tony Lopez
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