As spammers get more and more aggressive, the amount of junk email continues to rise exponentially. Recent reports state that 70-80% of all email traffic is now spam or unsolicited junk email. With this large amount of junk being sent to email boxes, one thing you can do to help cut down on this is to disable the use of the CATCH_ALL feature in your email settings. Spammers often send email to random addresses at domain names (such as mailroom, webmaster, junk, abc, etc.), and with the CATCH_ALL enabled, you end up getting all of these emails.

Before you change the setting for the CATCH_ALL in the Account Manager under Email Options, you will want to make sure that all of the email addresses that you do use are listed in the Email Aliases section. Once you have defined all of the email aliases/addresses that are in use for your domain, you can then edit the CATCH_ALL email alias and set it to BOUNCE, which will send back a "User Unknown" response for anyone that sends an email to an address that you do not have explicitly defined.