A system that's been running with 9000 users is now experiencing intermittent false positives when checking for invalid recipients. It's allowing invalid recipients "sometimes". I cannot find a pattern.
Any guess on areas that might be culprits? Does chkuser have a default "permit" behavior if it cannot reach IMAP or Sql? Not sure if there's a resource issue on the machine yet. Mysql backend, linux, courier imap, vpopmail 5.4.17, chkuser 2.08b Thanks. !DSPAM:497e28c432685692751208!
