Apr 27th, 2010
Catch-all/default address behavior for new accounts in Cpanel
Catch-all/default address behavior for new accounts in Cpanel.
The catch-all or default address handles email sent to nonexistent users on your server’s domains. It is useful to keep in mind that spammers frequently use Directory Harvest Attacks to try to guess recipient usernames at known domains. Thus, a domain may receive a large number of spam messages sent to nonexistent users, costing you server resources.
fail — Checks for the intended email recipient and, if no matching recipient is found, denies the SMTP request before downloading the message. This option is recommended.
blackhole — Discards the message after downloading it. This option uses system resources.
localuser — Allows users to set up their own catch-all email addresses. These email accounts will mainly serve to collect spam.
Reference : http://cpanel.net
