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From: Vivek Khera <vivek@khera.org>
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Date: Wed, 2 Jan 2008 10:31:02 -0500
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Subject: building system's libmilter with poll() support?
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What's the procedure to configure buildworld to get sendmail to build  
libmilter using poll() instead of select()?

There is discussion on the postfix mailing list that some high-load  
performance issues could be solved by switching this, but the "fix"  
was to hack the libmilter header file to force the appropriate define  
to be set, rather than using the sendmail configuration system. This  
would of course be difficult to preserve across updates and  
buildworlds...

Thanks!