On 8/8/2014 6:36 AM, richard lucassen wrote: > Hello list, > > Is it possible to manage the verify database manually? E.g. remove a > negative address entry? > > I forward mail to backend servers and when a backend server gives a > "5xx no such user", the negative entry is stored 3 hours (default). I'd > like to be able to remove such an entry manually. > > R. >
The default negative expire is 3 days, with a refresh time of 3 hours. This might be too long for some folks. If you often have problems with bad addresses turning into good addresses, better to reduce the negative cache time to a few minutes. This should still be sufficient to keep the backend from being hammered with repeated bad addresses. address_verify_negative_refresh_time = 10m address_verify_negative_expire_time = 15m It is possible to remove entries from the verify database manually, but it's disruptive because you **must** stop postfix before maintenance. - postfix stop - postmap -d u...@example.com btree:/path/to/verify_cache - postfix start -- Noel Jones
