To correct myself...
I don't believe it actually rebuilds the CDB file here, but it does update the open-smtp file with the new timestamp for the expiry. In any case, any change to the IP list and it updates the CDB file.
- Each future POP authentication will update the expire time of the open-smtp entry and rebuild the CDB file again.
- So for every pop authentication you have a CDB rebuild, versus a CDB read.
unless you're doing it in mysql. which works dandy.