mailserver using dfbsd

[Matthew Dillon]

:Due do the dynamic nature of grey-listing, I don't think this "hourly sync"
:is a good idea.
:
:There are several grey-listing implementations that can use a networked
:RDBMS like MySQL or PostgreSQL.  Run an *SQL server on either host (or
:on a dedicated third one) and let both mailservers use/maintain the same
:database over the network.
:
:	Geert

    If you don't like pulling a greylist once an hour or once a minute or 
    however, then just push live updates with a UDP broadcast and do a lazy
    synchronization to catch anything that was missed.

    If you want things to run efficiently, each SMTP processing host needs
    to operate independantly.  Otherwise any failure can bottleneck the
    entire system.  Having a single data server can and will bottleneck
    the system as well as create a single point of failure.  It's a really
    bad idea.  Keep it simple and design the system robustly.

					-Matt
					Matthew Dillon 
					<dillon at xxxxxxxxxxxxx>