I have a policy daemon which verifies quotas via smmapd. I have not looked at it in a long time, but maybe it can be easily extended to verify mailbox existence as well? It is available at http://www.omniflux.com/devel/ It does have some shortcomings such as not supporting virtual domains, but this is because I haven't needed that, not because it cannot be done. -- Omni Flux Farzad FARID wrote: > Thanks to you and Eric Luyten for the information on the small overhead. > So until someone ports smmapd to Postfix I agree that the recipient > address validation setting is sufficient. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html