You sure about that?
- unless you're doing it in mysql. which works dandy.
the MySQL open relay database would speed up the cleanup of old entries and the updates making that pretty quick, but ultimately it needs to make that a cdb file that sets relayclient for tcpserver to execute qmail-smtpd doesn't it? Still building a CDB file regularly.
no, no cdb rebuilding at all. this is with the patches to do so of course. my vpopmail tcp.smtp.cdb file hasn't been touched in just over three years.
of course, i have lots more mysql transactions going on all the time, but have had no performance problems associated with it.