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#5.5.0 smtp;550 Authentication is required for relay

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#5.5.0 smtp;550 Authentication is required for relay - 10.May2008 9:13:43 AM

shrry8

Posts: 42
Joined: 10.May2008
Status: offline

Your message did not reach some or all of the intended recipients. Subject: FW: Undeliverable:FW: Undeliverable: test Sent: 5/10/2008 5:45 PM The following recipient(s) cannot be reached: sherry81hi@hotmail.com on 5/10/2008 5:45 PM There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <communicator.tabbaheart.org #5.5.0 smtp;550 Authentication is required for relay>
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I am using Smater Mails at my Web Host. When ever i try to send and receive emails from Outlook it works perfectly as i have configured a POP account on my Outlook and i have enabled "My Server Requires Authentication"

but when i try to send email through my Exchange Server its giving me these errors. i have tried to configure my Server Virtual SMTP Server > Properities > Access > Relay > Granted my hole network to relay msgs. but its not working with me

I have also tried to test my Server Virtual SMTP Server > Properities > Delivery > Outbound Security > TLS Security (Checked) previously it was not checked.

Can you tell me the way through which i can relay all my emails.