Symantec 10490452 Administration Guide - Page 87
subject contains inkjet, then inkjet, Inkjet, and INKJET in
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Configuring email filtering 87 Creating virus, spam, and compliance filter policies instead of deleted. When you are sure the compliance policies are working correctly, you can adjust the action. ■ Sieve scripts cannot be imported, including those created in previous versions of Symantec or Brightmail software. ■ There is no limit to the number of conditions per compliance policy. ■ Conditions can't be nested. ■ You can create compliance policies that block or allow email based upon the sender information, but usually it is best to use the Allowed Senders Lists and Blocked Senders Lists. However, it is appropriate to create compliance policies if you need to block or keep email based on a combination of the sender and other criteria, such as the subject or recipient. ■ The order of conditions in a filter does not matter as far as whether a filter matches a message. However, if a filter has Body tests, you can optimize the filter by positioning them as the final conditions in a filter. ■ Spammers usually "spoof" or forge some of the visible headers and the usually invisible envelope information. Sometimes they forge header information using actual email addresses or domains of innocent people or companies. Use care when creating filters against spam you've received. ■ The following considerations apply to keyword text string searches. For details on regular expression searches, see "Using Perl-compatible regular expressions in conditions" on page 91. ■ All tests for words and phrases are case-insensitive, meaning that lowercase letters in your conditions match lower- and uppercase letters in messages, and uppercase letters in your conditions match lower- and uppercase letters in messages. For example, if you tested that the subject contains "inkjet", then "inkjet", "Inkjet", and "INKJET" in a message subject would match. If you instead tested for "INKJET" in the subject, then "inkjet", "Inkjet", and "INKJET" would still match. This applies to all test types and all filter components. ■ Multiple white spaces in an email header or body are treated as a single space character. For example, if you tested that the subject contains "inkjet cartridge", then "inkjet cartridge" and "inkjet cartridge" in a message subject would match. If you instead tested for "inkjet cartridge" in the subject, then "inkjet cartridge" and "inkjet cartridge" would still match. This applies to all test types and all filter components. A message subject containing "i n k j e t c a r t r i d g e" would not match a test for "inkjet cartridge" or "inkjet cartridge".
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