550 please turn on smtp authentication in your mail client exim

A specific error message!

The error message "550 please turn on smtp authentication in your mail client exim" is an SMTP error response code that indicates that the mail server (Exim) is refusing to accept an email message because the sender's mail client is not configured to use SMTP authentication.

Here's what you can do to resolve this issue:

For Outlook:

  1. Open Outlook and go to Tools > Account Settings.
  2. Select your email account and click Change.
  3. In the More Settings window, click on the Advanced tab.
  4. Under Outgoing Server, select the checkbox next to My outgoing server (SMTP) requires authentication.
  5. Select Use same settings as my incoming mail server.
  6. Click OK to save the changes.

For Thunderbird:

  1. Open Thunderbird and go to Tools > Account Settings.
  2. Select your email account and click Edit.
  3. In the Server Settings window, click on the Outgoing Server tab.
  4. Select the checkbox next to Use authentication.
  5. Choose the authentication method (e.g., PLAIN, LOGIN, or CRAM-MD5).
  6. Click OK to save the changes.

For other mail clients:

Consult your mail client's documentation or online support resources for specific instructions on how to enable SMTP authentication.

Additional tips: