How to Fix Mail Return to Sender,how to return mail to sender,message delivery failed,email delivery failure,return mail to sender

One of the most common searched issues on Google is how to return mail to sender. Many of our users who use webmail for their business, asked why their webmail not sending emails. Or why they can not reply to their mail. In this article, we will show you how to return mail to sender.

Why You Are Not Able to Send or Reply Emails?

Mail servers have an SMTP authentication feature enabled in them to recognize users. Who try to send emails through that server. The ‘SMTP AUTH’ error usually happens when users try to send emails without right authenticating. Their mail account in email clients such as Outlook or Thunderbird.
 
With the latest Cpanel update, email accounts that were working fine. Till now may find their emails getting undelivered, showing this error message :

How to Fix Mail Return to Sender,how to return mail to sender,message delivery failed,email delivery failure,return mail to sender

This has happened due to the latest security feature implemented in Cpanel. And it requires SSL by default. To combat spamming in servers and to provide secure email transmission. Email clients that try to send emails without using secure transmission. It will deny delivery mail return to sender.

Most likely you can not fix this error by installing a plugin to your WordPress website. Or changing any settings in your Cpanel. So WHM is the only way to fix this. Because the option Rewrite From header to match actual sender which is set to remote by in some case.

Why You Need WHM to Return Mail to Sender?

WHM (Web Hosting Manager) is the administrative console for Cpanel. It based on internet web hosting servers. Cpanel is the control panel for user’s for their web hosting. Accounts and operated on ports 2082 through 2083 generally.

WHM is the control panel for the administrator who manages the server. He sets up and manages the Cpanel user accounts and logins and operates on ports 2086 and 2087 . Cpanel and WHM is the same software. It refers to the user interface versus the administrator interface.

Ready? Let’s get started.

Video Tutorial

First, you need to Login your own WHM server with Username and Password. The login URL is something like https://server.yourdomain.com:2087

How to Fix Mail Return to Sender,how to return mail to sender,message delivery failed,email delivery failure,return mail to sender

After you logged in, WHM dashboard appears to you. Here you can find many options to configure your Server almost same as Cpanel Dashboard. Now, find Exim Configuration from all option in WHM. In Top Left corner you can see a search bar. Type Exim Configuration and click Exim Configuration Manager from the list.

How to Fix Mail Return to Sender,how to return mail to sender,message delivery failed,email delivery failure,return mail to sender

Now, In Exim Configuration Manager. Go to Basic Editor > Mail > Rewrite From header to match actual sender.  Here you should do the brainstorm. If you see Rewrite From header to match actual sender is set to remote change it to disable (default) and click save.

How to Fix Mail Return to Sender,how to return mail to sender,message delivery failed,email delivery failure,return mail to sender

So if your option Rewrite From header to match actual sender is already set to disable (default). And you’re getting the same error. Then set it to enabled (all) then click save. Again change it to disabled (default) and save it again.

Now go back to your Webmail and try to send your mail. With anticipation, you will see everything worked fine. This is the way to fix your Webmail.  If you’re using Mail Client Software. Like Mailbird, Thunderbird, Microsoft Outlook, and getting the same error. Please follow the instruction above and it’ll fix in a moment. No need to change settings of your respective Mail Client settings.

What if You Don’t Have WHM Access:

So who runs VPS and Dedicated server for their business must have a WHM (Web Hosting Manager). If you running shared hosting for your website or an eCommerce store you as likely as not have the access of WHM. So Contact your hosting provider about this issue. Mention them to disable Rewrite From header to match actual sender option.

We hope this article helped you learn how to return mail to sender. If you have any question regarding this articles please contact us anytime.

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