IBM AH0QXML User Guide - Page 91
Build your rules carefully, sextuplets, Essex
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Since we didn't receive this e-mail, whose attempted delivery to us is shown in the log, we know our mail file rule worked and deleted the e-mail. If you are using mail file rules that file e-mails into folders, such as Incoming\Suspicious, you can examine what is in the folders to see if the rules are working the way you want them to. You can also see if there are any false positives where you have rules that are scanning the subject or body of e-mails. Build your rules carefully When developing mail file rules, it is imperative that you take into account all mail that you receive. Classifying messages as spam when they are not will, at best, cause a nuisance, and at worst will cause missed or lost business. Select your text phrases carefully. Scanning for text that is too broad in scope can cause false positives. For example, at first glance it may seem appropriate to scan for the text sex. However, there are words-like sextuplets and Essex-that contain that same text, but that may not be indicative of spam messages. It is also important to understand the nature of your organization when building rules. For example, in a hospital, anatomical terms for body parts may be completely acceptable within medical or research departments, but could be used to screen out spam in the accounting department. As you gain more experience in setting up your mail file rules, and further analyze the nature of the spam mail that you receive, you can refine your rules to more effectively eliminate spam. Chapter 5. Using mail file rules to prevent spam 79
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