Fixed: AOL Mail Error 604

AOL Mail Error 604

The AOL Mail error 604 is an indication of email delivery failure that would have occurred due to connection issues, SMTP error, or configuration error. It can be resolved using the simple troubleshooting steps mentioned below.

  • Step 1: Ensure that Internet connection on your computer is stable.
  • Step 2:If there is a connection failure, you can’t send emails from your AOL Mail account.
  • Step 3:Next, check the configured SMTP server settings if you are using any email client such as Microsoft Outlook to access your email account.
  • Step 4:On your Outlook email client, click the File tab at the top-left corner of the screen.
  • Step 5:Select Info from the left-side panel and choose your AOL account from the right-side panel.
  • Step 6:Click the Account Settings pull-down menu and select the Server Settings option.
  • Step 7:In the pop-up window, click the Outgoing Mail drop-down menu to view the SMTP server settings.
  • Step 8:Check whether you have entered the correct outgoing mail server name (smtp.aol.com) and the encryption method in the required fields.
  • Step 9:Verify whether you have entered the port number as 465 in the Port field.
  • Step 10:Click to enable the My outgoing (SMTP) server requires authentication checkbox (if disabled).
  • Step 11:Click the Next button, followed by Finish to save the applied changes.
  • Step 12:If necessary, update the email client to fix the AOL Mail error.
  • Step 13:If the AOL Mail error 604 remains unsolved, check whether your firewall settings or antivirus program blocks the AOL Mail.
  • Step 14:If your AOL Mail is in the block list, disable the firewall settings or allow access to the AOL Mail to send and receive emails.
  • Step 15:Attempt to open your AOL Mail from the official AOL Mail site (webmail).
  • Step 16:Check if the error is resolved by sending a test email to your own account.
  • Step 17:If the AOL Mail error 604 problem persists, remove the configured AOL Mail from the email client and add it again with correct server settings.

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