When sending emails from your CCK account, you might receive mailer-daemon messages in response to your emails.
A mailer-daemon message is a system response generated if an email fails to get delivered. The mailer-daemon message also has an attachment describing the reason for the delivery failure.
In this mailer daemon 101, we discuss all that you should know about mailer-daemon messages.
What is mailer-daemon?
A mailer-daemon automates the management of undeliverable emails, sending failure reports to the sender's inbox with explanations. It retries delivery for days and sends a final report. This tool keeps users informed on email status, aiding effective communication.
When it fails to deliver the message to the destined inbox, it sends a message to your inbox stating the failure and its cause. Usually, these messages come from an address that looks like this - MAILER-DAEMON@XYZcompany.com.
Why is mailer-daemon important?
The mailer-daemon helps you in the following ways:
Usually, a mailer-daemon error report, or failure message, allows you to know the cause for email delivery failure via the mailer-daemon attachment.
When you know that some of your emails were rejected, along with the reason behind this rejection, you can address the exact issue and ensure email deliverability.
Further, if you are getting these messages, even when you have not originally sent the message, then it indicates that you are a victim of spamming.
Why do you receive mailer-daemon emails?
When you send an email message, it is verified by the mailer daemon server. You receive these emails as a result of sending an email to an account that:
No longer exists because of domain change or termination of an employee.
Is misspelt, or typed wrongly.
The receiver might only allow whitelisted email addresses to send messages.
For this reason, a mailer-daemon message is a useful tool to use, when tackling the problem of undelivered email messages to your email list.
What should you do when you receive an email from mailer-daemon?
If you get a mailer-daemon message for an email that you sent, then you must open the attachment and check the reason for the failed delivery.
Based on this reason, you can take any of the following actions:
Check the email ID for spelling mistakes.
Delete the contact from your email list if you are unable to fix the spelling mistake.
Activate your double opt-in feature on all of your opt-in forms to ensure that your contacts confirm their email address and that all of the email addresses on your email list are valid and correct.