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Working With Catch-All Domains


Applies to: Forefront Online Protection for Exchange

Topic Last Modified: 2012-06-22

This topic applies only to customers using FOPE in a stand-alone environment, and not as part of the Microsoft Office 365 or Live@edu services. Microsoft Office 365 and Live@edu subscribers cannot configure the Catch-all domains setting in the FOPE Administration Center. The catch-all domains feature is not supported in Office 365 and Live@edu.

In Forefront Online Protection for Exchange (FOPE), the Catch-All Domain feature allows you to filter a domain and all of its subdomains without having to add each individual subdomain to the FOPE Administration Center. The Catch-All feature ensures that mail for those subdomains is processed according to the parent (primary) domain profile. If you enable the Catch-All Domain feature for a domain in your organization, ensure that you change the mail exchanger (MX) record (the entry in your Domain Name System [DNS] settings that identifies the mail server responsible for handling email for that domain name) for each subdomain.

In order to edit the settings described here, see Edit Domain Preferences.

  • You cannot use the Catch-All domain feature if you also use Directory-Based Edge Blocking (DBEB). For more information about using the Catch-All Domain feature with Directory-Based Edge Blocking, contact Technical Support before you enable the feature.

  • When you set the Spam Quarantine feature for a catch-all domain, the naming convention used for the email aliases of any subdomain accounts must match that of the parent (primary) domain. This allows the feature to correctly filter spam. For example, if the parent domain address is wilson@contoso.com, the SMTP address for the subdomain account must be wilson@hr.contoso.com.

If you are looking for instructions to create a catch-all mailbox, see Policy Rules.

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