Zoho Mail is a secure and trusted business email solution. It is specially designed for an organization’s communication requirements. The Zoho Mail servers make sure that all your data is easily accessible as well as secure. Zoho Mail ensures user privacy and has got many collaboration features. Many users face the “Zoho SMTP Authentication Failed” error message while using Zoho Mail. The techniques to troubleshoot this error are explained below:
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You can make use of SMTP (Simple Mail Transfer Protocol) for sending emails from any email application via a specific server. So, if you wish to use your Zoho Mail account for sending emails to any recipient via some other email client, you will have to configure the settings in that email client using Zoho’s SMTP information. Follow the two methods given below to fix SMTP authentication problem.
When you come across the error message, you have to check your email address and password that you have provided while configuring the SMTP or the Outgoing server. You need to enter your complete email address and the correct password for authentication. Otherwise, Zoho Mail will throw the “SMTP Authentication Failed” error.
If you find that you have entered the correct email address and password and still get the “Zoho SMTP Authentication Failed” error, move on to the next method.
Check whether you have enabled two-factor authentication for your account on other devices. In case you have enabled two-factor authentication, you will have to generate an application-specific password to set up your account on other devices. The following instructions will guide you in generating an application-specific password:
Now that you have generated an application-specific password, the “Zoho SMTP Authentication Failed” error should get fixed.
The following SMTP configuration settings for Zoho Mail will be helpful for your setup:
In both the above SSL and TLS sections, your email address must match the email address or the email aliases of the account for which you are giving the authentication information.
You have to stick to the above SMTP configuration settings (for SSL and TLS) while setting up your Zoho account. If any of these settings are incorrect, that might also lead to the “Zoho SMTP Authentication Failed” error message.