Zoho Mail Error 550 - [SOLVED]

You might have got frustrated when the error code 550 appears on your Zoho mail. Don't panic! These errors can be quickly resolved by following the quick and the most straightforward methods mentioned on this page. Before proceeding to the troubleshooting steps, understand what's Zoho mail error 550 and the causes of such an error. Zoho mail error code 550 --- it’s an SMTP (Simple Mail Transfer Protocol) error code that occurs when a spam folder blocks a message from reaching the recipient or when the recipient's email server blocks the email. The error is also called SMTP error code 550.

The Error Occurs Mainly Because:

  • Step 1:The recipient's email address doesn't exist or is suspended.
  • Step 2:The recipient's hosting server is temporarily inaccessible.
  • Step 3:Your domain name is invalid or disabled.
  • Step 4:You use an email client from a different IP address.
  • Step 5:The recipient's mail server failed to recognize your email address.

Method 1: Rechecking The Zoho Mail

  • Step 1:Check the recipient’s email address. Make sure that the email address doesn't contain any spelling mistakes or extra spaces.
  • Step 2:Attempt to send the email to the recipient after a few hours to fix Zoho mail error 550 issue. The recipient's server may be down temporarily. Wait for some time and then send your email. If the error message reappears, then proceed with the following steps.

Method 2: Change Your Outgoing Mail Port

Check the email application. If you're using port 25 as the outgoing port, there are possibilities for the server to block the email as spam. Change your port to 26, 465, 587, or 2525.

Method 3: Enable SMTP (for Outlook email client)

  • Step 1:Open the Outlook email client, select File, and click on the Account Settings tab.
  • Step 2:Check and select your email in the Email tab and tick on the Change icon above it.
  • Step 3:The Internet Email Settings Window will open. Select Outgoing Server and make sure to tick the My outgoing server (SMTP) requires authentication checkbox and the Use same settings as my incoming mail server radio button.
  • Step 4:Click OK and complete the enabling process.

If the Zoho mail error 550 issue persists or If you're stuck anywhere in between, then contact our technical team for further guidance.