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6.0

Exchange 2003 Open relay problem?

Asked by pcchiu in Exchange Email Server

Tags: relay, smtp, 550

Our System:  Windows 2003 with Exchange 2003, cisco pix 501.
Our ISP complain that we've an open relay server so I double check the setting and here's the setting with open relay, Somehow whenever I turn off the openrelay as instruct by some website I got the error message when I send a test email from my gmail account...
Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 9): 550 5.7.1 Unable to relay for abcd@abdc.com(the actual error so the real email).
Here's the setting when it got the above error:
From the SMTP Virtual Server properties:
Access->Anonymous Access(checked), Basic Authentication(checked), Integrated Windows Authentication(checked).
Connection->(all except the list below-checked) with no entry at the computers field.
Relay Restrictions->Relay(Only the list below-checked), with no entry at the computers fields, the Allow all computer which successfully... of the list above (checked).

When I changed the Relay Restrictions back to "All except the list below" everything back to normal however the server become open relay again...


Our goal is make the server not open relay anymore but still able to receive email from outside...  Am I doing something wrong or miss some step?


I also reboot the server couple times and also reapply the SP2 and reboot couple times...


Thanks in advance...
 
[+][-]12/20/05 12:28 PM, ID: 15521514Accepted Solution

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About this solution

Zone: Exchange Email Server
Tags: relay, smtp, 550
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Solution Provided By: Dilan77
Participating Experts: 2
Solution Grade: B
 
[+][-]12/20/05 02:42 AM, ID: 15517384Expert Comment

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[+][-]12/21/05 02:48 AM, ID: 15525240Expert Comment

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