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Question
550 5.7.1 Unable to relay
I have an email address that is used to send out emails to customers through a java program. My developer is getting 550 5.7.1 Unable to relay. So it is not able to send emails to outside sources.
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Answers
Which version if exchange are you using?
Is the java programme running on a different server?
Is the programme authenticating with your SMTP service? I.e is it supplying a valid domain username and password?
In exchange 2003 you may need to add the IP address to the allowed relay section of the default virtual smtp server located in Exchange System Manager > Administrative Groups > First Administrative Group > Servers > Servernsme > Protocols > SMTP
in Exchange 2007 it's in Exchange Management Console > Server Configuration > Client Access > Send Connector tab you need to add the IP to the client connector.
See here for a good guide with screen shots: http://msexchangeteam.com/
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by: RammesteinPosted on 2009-10-26 at 11:55:56ID: 25665476
What type of SMTP server is it using?
Windows SMTP,Exchange 200,2003 or 2007???
Please clarify.
If it is Exchange 2007,got thru this:
http://www.experts-exchang