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155 lines
5.0 KiB
155 lines
5.0 KiB
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HOWTO for setting up a KMail antispam wizard configuration entry
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================================================================
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This is a HOWTO for setting up a KMail antispam wizard configuration
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entry. Since this possibly is more developer related, I put this as
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text file into the source SVN. Possibly some of this should go to the
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user documentation.
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I gathered the information from several mails and comments by Andreas
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Gungl, the original developer of the antispam wizard for KMail, and
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Ingo Kloecker.
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When you have questions do not hesitate to ask me, Martin Steigerwald,
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Andreas or Ingo.
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Basics
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------
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The configuration file for the KMail antispam wizard "kmail.antispamrc"
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consists of one entry for each spamfilter that the antispam wizard
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shall support.
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At the beginning of the file in the section "General" the option "tools"
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specifies the count of configured spam filters. Increase that by one
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when you add a new entry:
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[General]
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tools=11
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A spam filter configuration entry starts with a header like this:
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[Spamtool #11]
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After this you place all the options for the spam filter. Please use
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an ordering that is similar to the other entries in the configuration
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file so that things are unified a bit.
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General options
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---------------
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- Ident: Specifies the internal identifier for the entry
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- Version: Specifies the version of the entry (FIXME what is this for?)
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- Priority: Specifies the priority of the filter. This value is used to
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place faster filters before the slower ones in the selection list. If the
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user chooses the top item, they get the fastest filter. Provider sided
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"filters" (which produce headers tough) like the GMX filter have a prio
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at about 70, they are very fast as they don't consume time on the client
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side. Since CRM114 is almost as fast it gets 65 ;-).
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- VisibleName: This is the name that is presented to the user
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Or:
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- HeadersOnly=yes: This is used for entries where KMail should just parse
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the mail headers for the spam score display (see Razor filter and below
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for spam score display details).
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Spam filter options
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-------------------
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These specify details about the spamfilter.
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- Executable: Specifies a test whether the executable of the spamfilter
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can be started. You should provide something which can be run on the
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command line and returns [ $? -eq 0 ], i.e. it doesn't wait for any input
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etc. It usually make sense to assume the program in the $PATH, so you
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should better avoid /usr/bin. Set executable to "echo" for provider based
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filters.
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Example: Executable=crm -v | grep "CRM114"
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- URL: URL to the homepage of the filter
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- PipeFilterName: Name of the pipe-through filter used to send mails to the
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spamfilter and get them back with added spam filter headers.
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- PipeCmdDetect: Command used to pipe the mail into.
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- ExecCmdSpam: Command used to mark a mail as spam.
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- ExecCmdHam: Command used to mark a mail as ham.
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- SupportsBayes: Set to 1 if you have a spam filter that can learn. Only
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in this case KMail uses ExecCmdSpam and ExecCmdHam to let the user mark
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mail as ham or spam.
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Spam detection options
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----------------------
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These specify how KMail shall detect whether a mail is spam, unsure or good.
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- DetectionHeader: The name of the header where the spam filter puts the spam
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status of a mail into.
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- DetectionPattern: The pattern the spam filter uses for marking a mail as
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spam.
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- DetectionPattern2: The pattern the spam filter uses for marking a mail as
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unsure. Set "SupportsUnsure=1" when you use this.
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- DetectionOnly: Don't pipe mails through the spam filter, but just use headers
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from outside, e.g. a provider based spam filter (See GMX).
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- UseRegExp: Set to 1 if you need to use regular expressions in the detection
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patterns. KMail can operate faster when they are not required.
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- SupportsUnsure: Set to 1 if you have a spam filter that supports
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classying mails as unsure to tell the user to train those.
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Spam score display
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------------------
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Those regular expressions are used to extract the actual "spamicity"
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score and the threshold (i.e. the upper bound for non-spam) from
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SpamAssassin's ScoreHeader. The score and the threshold are then used
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for showing the spam status in the message header, i.e. the small
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colorbar.
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You need to specify the following values:
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- ScoreName: The name that will be shown in the message header.
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- ScoreHeader: The message header containing the score value.
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- ScoreType: The type of the score, cf. below.
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- ScoreValueRegexp: A regular expression for extracting the score from
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the ScoreHeader.
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- ScoreThresholdRegexp: A regular expression for extracting the threshold
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from the ScoreHeader; only needed for Adjusted type. Please set to
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nothing (ScoreThresholdRegexp=) if not needed.
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KMail supports the following ScoreType values:
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- Bool: Simple Yes or No (Razor)
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- Decimal: For probability between 0.0 and 1.0 (BogoFilter)
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- Percentage: For straight percentages between 0.0 and 100.0
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- Adjusted: Use this when we need to compare against a threshold
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(SpamAssasssin)
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