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Using Wildcards (*) For Specifying Scopes Of SMTP Addresses
The senders and recipients can be defined by providing parts of their SMTP addresses. To specify a part of the address, use a wildcard or asterisk (*), which substitutes any string of characters. The asterisk can be used more than once in a single address.

The use of the asterisk is exemplified in Figure 1.

Specified senders in the sendersí scope of a rule.
Fig.1. Specified senders in the sendersí scope of a rule.

The example above includes an asterisk (*) sign, which substitutes any sequence of characters, standing in front of @company.com domain. This means the rule will apply to all senders belonging to this domain. Since there is an exception, the rule will not apply to those users of @company.com whose addresses include the word support. The asterisk (*) sign has been used in front of the word support and after it, so the condition is met by addresses such as: john_support@company.com, support_john@company.com, john.support.outlook@company.com.

The asterisk (*) sign has also been used in front of co.uk, which means that the rule will apply to all senders whose domain ends in co.uk, e.g. support@firm.co.uk, john@yahoo.co.uk.

For the rule to apply to all senders and recipients, the upper fields in the sendersí scope and the recipientsí scope dialog boxes must include the asterisk (*) sign only or be left empty.