You don't have to set it up this way; our Barracudas do the lookup against LDAP
My guess is that LDAP queries are cost even more than than SMTP RCPT TO "queries".
In either case, unlike native postfix, there seems to be no negative/positive caching so every incoming msg generates another RCTP TO/LDAP probe.
If your BC is strong enough for your traffic and attacks, OK. If not, rather than upgrading the BC, you can put IMGate out front and greatly extend the BC life much cheaper than an upgrade, exactly the same as with IMGate and Imail alone.
Len To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
