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We highly recommend you set the default catch-all address for cPanel email to :fail: for several different reasons:
- Undirected Email is never actually processed or received thus saving space, bandwidth and server resources (CPU, memory and disk I/O)
-This complies with SMTP RFC's because the sending SMTP server receives the DENY command. No bounce mail is sent to the sender, their SMTP provider will inform them it has bounced.
- Can lead to a lot of spam due to spammers realising the address must be active if no bounce message has been received
- Saves a lot of time sorting through emails as the majority of spam will be discarded before it is even processed
For the full article, visit ConfigServer
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