On Fri, Feb 10, 2017 at 05:37:36PM +0000, Gomes, Rich wrote: > It's going against MS AD, I am sure indexing is configured correctly there.
That rather depends on what query you're sending, and how AD is configured. Your confidence does not inspire confidence. :-( > What can I do on my postfix server to alleviate this issue? * Use queries that are implemented efficiently on the AD side. * Use LDAP servers that are not already struggling with processing other queries. * As appropriate specify the "domain" attribute in the LDAP table definitions to avoid looking for data for domains that you don't use in LDAP. * Post your Postfix LDAP table definition (sans passwords). -- Viktor.