====GeoIP: spam blocking based on geographical information====
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The GeoIP plugin for Spamassasin lets us know where our mail server is receiving mail from. If we're receiving too much spam from a particular location, this will help track it down. We can then use that info to reject connections from that place taking the load off our server.
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{{Note box | This can be a crude way of blocking spam and potentially also block legitimate users!}}
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You can find information how to install and use it on the [[GeoIP]] page.