Mailbox unavailable. The server response was: 5.7.1

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i have developed on aplication for sending email.

i have Specified Smtp address, Credentials,

i am using windows server 2008, IIS 7

Mailbox unavailable. The server response was: 5.7.1 Unable to relay for Abc@xyz.com

To fix it you have to configure relay restrictions in the IIS admin.

but where this option in IIS server 7

asked Aug 30 '10 at 11:42

happysmile

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migrated from stackoverflow.com May 26 '11 at 0:34

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1 Answer

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To configure relay restrictions in IIS admin follow below mentioned steps

Go to “Default SMTP Virtual Server” in IIS and then go to properties
Select tab “Access”
Select last Option "Relay Restriction" by clicking the "Realy" button

a new window will pop up

Select the appropriate radio button and add IP addresses accordingly

answered May 26 '11 at 4:38

Stephen Lembert
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