After either fixing the Imail peer bug of yesterday, or when changing all your Imail nobody@ domains to non-nobody while you have been running RAV, your address_verify.map database will be polluted with "known" users that never existed but didn't bounce, and a will now start bouncing by the mailbox server, defeating the benefit of RAV.
Two ways to unpollute the address_verify.map database: 1. delete the file and start over 2. because RAV has cached these non-existant users as known users, you have to adjust the _positive_ caching params downward: address_verify_positive_expire_time = 1h address_verify_positive_refresh_time = 1h After RAV cache "forgets" the non-existant known users, then you can increase the positive params back up to longer values: address_verify_positive_expire_time = 20d address_verify_positive_refresh_time = 7d Len
