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generator) pool. It answers queries by the <a href="smtpd.8.html"><b>smtpd</b>(8)</a> and
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<a href="smtp.8.html"><b>smtp</b>(8)</a> processes to seed their internal PRNG pools.
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external source (EGD, /dev/urandom, or regular file). It
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is updated at configurable pseudo-random intervals with
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data from the external source. It is updated periodically