>Is it simply a front-end cache on my mailgateway for all the unknown = >users >on my imail machine?
yes >And if that is the case, would it be useless to = >use it for a domain that gets several hundred new accounts each day? not useless. However, if a domain gets that many new accounts/day, it must have many 1000's of accounts, and RAV is not recommended for high-volume MXs. better to export the users from the mailbox server to the MX and use check_recipient_access + to_relay_recipients table of known users. Len
