Definitions

catch-all

Catch-all (Mail)

A Catch-all for email, usually refers to a mailbox on a domain that will "catch all" of the emails addressed to the domain that do not exist in the mail server. Configuring a catch-all address can help avoid losing emails due to misspelling.

For example: if jondoe@xyz.com is configured to be the catch-all email address on xyz.com, then any email sent to an undefined @xyz.com email address will be forwarded to jondoe@xyz.com instead of being rejected as an Undeliverable message or Unknown User error.

Catch-all addresses are commonly known as spam magnets, in spite of their usefulness to allow you to receive e-mail from people who can't remember your email address or mistypes it.

References

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