Email Account Greylisted

If you’re seeing the following message in Outlook. “The server responded 451 Greylisted…” Below is how you can fix the error.

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Step 1: Go to your Account Settings

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Step 2: Click More Settings > Outgoing Server > Check My Outgoing Server (SMTP) requires authentication > Use same settings as my incoming mail server

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Step 6: Click OK > Next > Finish

At this point you try sending out a message. You should no longer receive the following message “The server responded 451 Greylisted…”.