How To Fix Email Error Code 421?

Blog and News

Technician can fix the issue!

Toll Free US/CA: +1-866-969-0698 Toll Free UK: +44-808-164-5280

An Email error 421 is a temporary routing issue on the receiving mail server’s end. You can easily Fix Email Error Code 421 by taking technical assistance from dexterous techies. This type of error is being faced by the multiple users while sending and receiving mail. And due to having lack of technical knowledge you may not exterminate this hurdle. Don’t fret! We have technical staff you will properly help you out.

Such an error is a common SMTP Email error message. However the error appears due to incorrect settings for the SMTP // SMT server but there are also another few causes that will trigger this Outlook behavior. Just Update Email Account and get your error exterminated from the root.

Causes of Email Error 421

Such an error encountered in Outlook due to the following reasons:

  • Due to mistake in Outlook configuration
  • Because of firewall related issues
  • Filtered traffic on port 25
  • Interference caused by a VPN connection

Solution to Fix Email Error Code 421

Fix Email Error Code 421

Following are the methods which you should follow carefully if really want your Email account related trouble free. Just have a glimpse on the below points once:

Resolve Outlook Configuration Problem

To cope with Email error code 421, you need to fix Outlook configuration problem. To do it follow the below steps:

  • Open Outlook first and then go to “File” > “Account Settings”
  • Now select the account in question and click the “Remove” button
  • After the account is removed, click the “New” button, select “Email account” and then insert your credentials again
  • Hit “Next” and wait for the settings to be configured and test e-mail message to be sent
  • If the test e-mail is successfully sent, your email account will successfully configured
  • If you get the same error message when the test email is sent, then change the SMTP port number
Related Post: How To Fix Email Error 554?

Go Through Our Online Service For the Help


If the above written steps is not able to make understand by your own, then do one thing that is to place a call at Email Support Number +1-855-847-1975. After doing that you will be in touch with deft connoisseurs who have immense years of experience. And they will proffer you the fruitful solution within a short span of time so that your time as well as effort be saved.

Call Now Button
error: Content is protected !!