How do I fix SMTP Authentication error?

Fix SMTP Server error in Email

  1. Open your email client program (Outlook Express, Outlook, Eudora or Windows Mail)
  2. Click “Accounts” in the “Tools” menu.
  3. Click on your email account then click “Properties” button.
  4. Click “General” tab.
  5. Ensure that the “E-mail address” is your valid address for this account.
  6. Click “Servers” tab.

How do I enable SMTP Authentication for the POP or IMAP account?

Click More Settings button on the POP and IMAP Account Settings. Click Outgoing Server tab, check the box for “My outgoing server (SMTP) requires authentication” and make sure “Use same settings as my incoming mail server” is selected.

Why is SMTP AUTH bad?

No SMTP authentication means that it is possible to spoof the sender. In the best case, someone will use your mail server to send unauthorized sales emails. At worst, the spoofer can request personal information from the recipient and use it for identity theft purposes (phishing).

How do I enable SMTP Authentication?

How to configure SMTP authentication

  1. Right-click on the context menu of your e-mail account and click on “Settings”
  2. Navigate to “Outgoing server (SMTP)” select your mail server and click “Edit”
  3. Activate the option “Use username and password” and enter your e-mail address.
  4. Confirm the settings with “OK”

How do I fix POP3 server error?

Please try the following steps:

  1. In Outlook, click Tools => E-mail Accounts.
  2. Click View or change existing e-mail accounts and click Next.
  3. Click the account of type POP/SMTP (Default) and click Change.
  4. Click More Settings.
  5. Click the Advanced tab.
  6. Make sure SSL is not used and POP3 port is 110 (default). Click OK.

What does 5.7 0 authentication required mean?

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7. 0 Must issue a STARTTLS command first: This error means that the transport layer security (TLS) needs to be set to “Yes” in your SMTP settings.

What is a 535 error?

A “Server says: 535 – Incorrect authentication data” error is usually related to the SMTP User Authentication details you have configured (or not configured) in your email settings. This error is often reported by mail users who maintain multiple mail devices, and forget to update login details in one of their devices.

What is the difference between POP before SMTP and SMTP AUTH?

SMTP AUTH: Authenticates on the SMTP server (outgoing mail server) when sending the email. The mail server needs to support SMTP authentication. POP before SMTP Authenticates on the POP3 server (receiving mail server) before sending the email.

How do I find my SMTP authentication?

To test SMTP authentication via telnet:

  1. In a telnet client such as PuTTY, connect to the SMG appliance: telnet 587.
  2. Greet the mail server: EHLO mailserver.com.
  3. Tell SMG you want to authenticate with it: AUTH LOGIN.
  4. Paste the base64 encoded username.
  5. Paste the base64 encoded password for the username.

When to use POP before or after SMTP?

POP before SMTP or SMTP after POP is a method of authentication used by mail server software which helps allow users the option to send e-mail from any location, as long as they can demonstrably also fetch their mail from the same place. The POP before SMTP approach has been superseded by SMTP Authentication .

What happens when SMTP authentication fails in outlook?

Mail client like Outlook uses SMTP (Simple Mail Transfer Protocol) to send messages. Later, to download the mails E-mail clients use either POP or IMAP protocol. But, for any reason, if the authentication fails, mail client like Outlook generates an appropriate error message.

What should I do if my SMTP connection failed?

Connection failed. Check the “SMTP Server” setting. Connection failed. Check the “SMTP Server Port” setting. Authentication failed. “SMTP Auth” is not supported. Authentication failed. Logging into “SMTP Auth” failed. Check the login name of the mail server and the password.

Do you need to do SMTP Authentication in cPanel?

SMTP authentication in cPanel allow sending messages via POP-before-SMTP. Here, once when the Outlook download the mails, there is no need to re-authenticate to send mails through SMTP. Usually, SMTP authentication will be disabled in WHM by default.