diff --git a/HowtoDovecot.md b/HowtoDovecot.md
index 1189316a..2bfa8ce4 100644
--- a/HowtoDovecot.md
+++ b/HowtoDovecot.md
@@ -136,6 +136,7 @@ base = dc=example,dc=com
 user_attrs = homeDirectory=home
 user_filter = (&(isActive=TRUE)(uid=%u))
 pass_attrs = uid=user,userPassword=password
+iterate_filter = (&(isActive=TRUE))
 ~~~
 
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