Email hosting and catch all
Runbox supports a so-called "catch all" function for email hosting. This means that you will receive mail on all valid addresses for your domain without having to setup an explicit alias. All mail will automatically be received by your runbox account.

Use this function with care. You will receive mail on
every valid address for this domain name. Some spammers run so-called dictionary attacks, which means that they send to spam to many common names within a given domain. You will receive spam on all these addresses, so make sure that you have your spam filter activated.
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JanSchreiber - 13 Jan 2005