Friday, 16 September 2011

SMTP server response: 550 5.7.1 Unable to relay or cannot pick up iis directory

1) Go to: start > settings > control panel > Administrative Tools > Internet Information Services
2) Expand the " (local computer)" node
3) Right click on your SMTP server > go to "Properties"
4) Click "Access" tab
5) Under Relay Restrictions, click the "Relay" button
6) Click "Add"
7) Select "Single Computer" and enter IP address 127.0.0.1
8) Hit OK, OK, OK (until the properties dialog is closed)

and also web.config set smtp server = '127.0.0.1'

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