Invalid HELO name

If you are getting "550 Access denied - Invalid HELO name" or a similar error message in your email message, please check your settings, below are settings for common e-mail clients.

Outlook 2010 and newer:
  1. From the Menu Bar, Click the "File" tab.
  2. Click the Info tab on the left and select "Accounts Settings">> Click "Account Settings".
  3. Select your Email account then Click "Change".
  4. Click "More settings".
  5. Select "Outgoing Server" tab.
  6. Select the box beside "My outgoing server (SMTP) requires authentication".
  7. Select "Use same settings as my incoming email server".
  8. Save and finish.

Microsoft Outlook 2007 and earlier:

  1. From the Menu Bar, Click "Tools" then Click "E-mail Accounts".
  2. Select "View or change existing e-mail accounts" then Click "Next".
  3. Select your Email account then Click "Change"
  4. Click "More settings".
  5. Select "Outgoing Server" tab.
  6. Select the box beside "My outgoing server (SMTP) requires authentication".
  7. Select "Use same settings as my incoming email server".
  8. Save and finish

MacMail:

  1. In Mac Mail Click Mail >> Preferences >> Accounts
  2. Near bottom of the window, find "Outgoing Mail Server (SMTP)", click the drop down arrow and select "Edit SMTP Server List..."
  3. Click the "Advanced" button in the center of the window and make sure Authentication is set to "Password".
  4. Click "Ok" and finish
Thunderbird:
  1. From Menu Bar, click "Tools", then "Account Settings".
  2. Click on "Outgoing Server (SMTP)" at the bottom of the list in on the left side of the window.
  3. Back in the middle of the window, select the appropriate outgoing server and click the "Edit" button.
  4. Make sure "Authentication method" is set to "Normal password".
  5. Click "OK" and finish
  • 249 Users Found This Useful
Was this answer helpful?

Related Articles

Forwarding an e-mail as attachment

To forward one or more emails exactly as they were sent, you can ‘forward as attachment’. These...

E-mail Account Settings

Customers who are on the Starter/Business Cloud plans, you can use the following settings to...

E-mail subject contains [Spam-pop3]

Our mail servers do not have any configuration for rewriting the received email's subject line....