What is mailer daemon text message

A "Mailer Daemon" text message is a type of automated message that is sent by an email server or a mail transfer agent (MTA) when it is unable to deliver an email message to its intended recipient.

When an email message is sent, it is typically routed through a series of mail servers, each of which checks the message's destination and attempts to deliver it to the recipient's email account. If a mail server is unable to deliver the message, it will typically send a notification back to the sender's email account, indicating that the message was undeliverable.

This notification is often referred to as a "bounce" or "non-delivery report" (NDR). In some cases, the notification may be sent as a text message (SMS) to the sender's mobile phone, rather than as an email message.

The text message may contain information such as:

• The email address of the intended recipient
• The reason why the message was undeliverable (e.g. "Recipient's email account is full", "Recipient's email address is invalid", etc.)
• A suggestion for how to resolve the issue (e.g. "Try sending the message again later", "Check the recipient's email account settings", etc.)

Mailer Daemon text messages are typically sent by email servers or MTAs that are configured to send notifications to senders when their messages are undeliverable. These messages are intended to help senders troubleshoot issues with their email messages and improve the delivery of their emails.

Here is an example of what a Mailer Daemon text message might look like:

"Undeliverable: [recipient's email address]. Reason: Email account is full. Try sending again later."

It's worth noting that Mailer Daemon text messages are not the same as "bounce" messages, which are typically sent as email messages and contain more detailed information about the delivery failure.