[Spamassassin Wiki] Update of "OutOfMemoryProblems" by MichaelParker

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The following page has been changed by MichaelParker:
http://wiki.apache.org/spamassassin/OutOfMemoryProblems

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  You should also avoid using very large custom rules files. The larger custom rules files available from the SA community will exacerbate this problem. A prime example is sa-blacklist.cf or sa-blacklist-uri.cf by Bill Stearns (See CustomRulesets). If you have memory problems using these rulesets, consider using [http://wiki.apache.org/spamassassin/SURBL] instead.
  
- If you're doing the above and still running out of memory, check the size of your AWL databases. Per http://bugzilla.spamassassin.org/show_bug.cgi?id=3082 and http://bugzilla.spamassassin.org/show_bug.cgi?id=3981 an excessively large AWL database can cause this problem. You can use the --clean switch of the tools/check_whitelist utility to remove entries with < n hits, providing a way to clean out the db. This should resolve this specific problem.
+ If you're doing the above and still running out of memory, check the size of your AWL databases. Version 3.0.3 fixes an AWL specific bug that can cause memory bloat from large AWL db files. You can also use the --clean switch of the tools/check_whitelist utility to remove entries with < n hits, providing a way to clean out the db. This should resolve this specific problem.