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https://issues.apache.org/jira/browse/JAMES-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487757
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Norman Maurer commented on JAMES-774:
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Danny, any timeframe on this ?
> Add documentation for the dns ttl issue
> ---------------------------------------
>
> Key: JAMES-774
> URL: https://issues.apache.org/jira/browse/JAMES-774
> Project: James
> Issue Type: Task
> Affects Versions: 2.3.1-dev, Next Major
> Reporter: Stefano Bagnara
> Assigned To: Danny Angus
> Fix For: 2.3.1-dev
>
>
> Add documentation to the site and/or to the config.xml about the unbounded
> cache issue in the JVM and how we introduced a system property
> networkaddress.cache.ttl that is read by phoenix at startup and used to
> override the java 1.4 Security.setProperty("networkaddress.cache.ttl" value.
> By default in run.bat, phoenix.sh and james-server.sh (this one only in
> trunk) and wrapper.conf we added 300 seconds (-Dnetworkaddress.cache.ttl=300).
> The cache is about positive results from dns lookups.
> -1 means that the cache is never expired
> 0 means no cache
> x>0 mean the number of seconds before expiration.
> Please not that james trunk should not be affected by this cache because
> every usage of the InetAddress lookups have been removed by core code, but
> third party mailets could be afftected anyway, and this is why we added the
> property. James 2.3 instead still uses some InetAddress lookup and this
> property will save from OOM due to the unbounded cache.
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