While sending an email on Microsoft Outlook, if the ‘server responded: 421 cannot connect to SMTP server’ error message appears, refer to the instructions mentioned below to clear it. The main reason for the SMTP error 421 problem is due to incorrect SMTP server settings.
Scenario 1 :
If the error 421 problem occurs once you configure the email account on the Microsoft Outlook application, remove the existing account, and reconfigure it using the automatic configuration method.
Scenario 2 :
If you were able to send emails previously without the error 421 problem, but if you see this error now, refer to the steps mentioned here.
In order to prevent third parties from reading your mail content, email encryption is done, which is basically digitizing the information within.
There are not many ways to prevent spam from piling up in your Inbox. Here’s how you can filter out most of them.
AT&T Email error 0x800CCC0F occurs when mails are not being sent or received through AT&T services. Due to the technical glitches causing it, many email functions are disabled. The computer’s Operating System might get frozen.
Open the Gmail app.Select the inbox tab you want to delete.You’ll find the Empty Box button over the Compose button.