diff --git a/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/014AuthCache b/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/014AuthCache
index 04309c3..4d40c79 100644
--- a/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/014AuthCache
+++ b/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/014AuthCache
@@ -1 +1,3 @@
 auth_cache_size = { $dovecot{'AuthCacheSize'} || '5242880' }
+auth_cache_ttl = 30 minutes
+auth_cache_negative_ttl = 1 seconds