How do I fix SMTP Error 421?

How do I fix SMTP Error 421?

How to Fix Error 421 Cannot Connect to SMTP Server?

1. Send/Receive Groups window.
2. Changing port numbers in Internet Email Settings window.
3. Enabling “Use the same settings as my incoming mail server” option.
4. Recreating Outlook account.
5. Turning Off Firewall in Windows Settings.
6. PST selection window in Stellar Repair for Outlook.

What is a 421 email error?

421 – Your message was temporarily deferred by the recipient server. This is usually a result of too many connections in a short timeframe or too many messages. 450 – Your message was not delivered because the other user mailbox was not available. This can happen if the mailbox is locked or is not routable.

How do I get rid of errors in Windows Live Mail?

Follows these steps:

1. Login to your Windows Live Mail application.
2. Click Work Offline – you will need to be on the HOME page of Windows Live mail to see the option.
3. When you are offline, you will then see the Outbox folder.
4. Click on the message(s) that you want to delete, then click on the DELETE key to remove them.

How do I fix SMTP error in webmail?

Cannot send emails: How to fix email sending issues

1. Check your internet connection. Yup.
2. Check your SMTP server details.
3. Verify all usernames and passwords.
4. Check your SMTP server connection.
5. Change your SMTP port.
6. Control your antivirus or firewall settings.

What does 421 service not available mean?

FTP error 421 service not available – A Quick Glance And, FTP error 421 service not available means that the connection to the remote server can’t be established. FTP clients such as Filezilla returns the error like this: 421 Service not available, remote server has closed connection.

Can not connect to SMT?

Outlook Configuration mistakes – The most common reason for the Outlook cannot connect to SMTP / SMT server error is a configuration mistake in Outlook settings. Interference caused by a VPN connection – Some VPN providers (particularly new products) might not have the email server that you used whitelisted.

Why is my Windows Live Mail not working?

Solution to Fix this issue Try to run Windows Live Mail as Administrator in compatibility mode. Try to re-configure the Windows Live Mail account. Remove the existing WLM account and create a new one. Try reinstalling Windows Essentials 2012 on your Windows 10.

How do I reset my SMTP server?

On the Change E-mail Settings window, click More Settings. Click the Outgoing Server tab and check the My outgoing server (SMTP) requires authentication option. Click the Advanced tab and change the Outgoing server (SMTP) port.

What is FTP data port?

FTP is a protocol used to transfer files between computers. The data portion of the file transfer often passes through TCP port 21, while the control typically happens on TCP port 20.