Symantec 10490452 Administration Guide - Page 112

112 Configuring email filtering Managing policy resources classes and types that you want to match. Press and hold Ctrl while clicking to select more than one file class or file type. ■ Click the second radio button to match files based on their file names, extensions, or MIME types. Choose File name, Extension, or MIMEtype. Then choose is, contains, begins with, or ends with. Then type the text to match or not match. Type only one filename, extension, or MIME type in the box. Table 4-15 includes information about valid extension, file name, and MIME-type attachment types. Type the MIME type completely, such as image or image/gif, not ima. 5 Click Add to add the condition you created to the list of conditions at the bottom of the page. 6 Repeat steps 4 and 5 to add more conditions as desired. If needed, you can click on a condition in the list and click Delete to delete that condition. 7 Click Save. Configuring dictionaries A dictionary is a list of words, phrases, or both that messages are checked against when you choose the Any part of the message condition in a compliance policy. Symantec Mail Security for SMTP evaluates matches to a dictionary using substring text analysis, not regular expression analysis. Symantec Mail Security for SMTP includes the following predefined dictionaries, which can be edited. The dictionaries marked as ambiguous contain terms that could be legitimate when used in certain contexts. ■ Profanity ■ Profanity (Ambiguous) ■ Racial ■ Racial (Ambiguous) ■ Sexual ■ Sexual Slang ■ Sexual (Ambiguous) Note the following additional information about dictionaries: ■ Tests against dictionaries only match the exact word listed, not other common endings, such as verb tenses. ■ Wildcards are not supported in dictionaries.