diff --git a/lib/configfiles/bionic.xml b/lib/configfiles/bionic.xml
index 0522b429..10e10ae1 100644
--- a/lib/configfiles/bionic.xml
+++ b/lib/configfiles/bionic.xml
@@ -2745,7 +2745,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>
diff --git a/lib/configfiles/bullseye.xml b/lib/configfiles/bullseye.xml
index 26de3086..5d8a7754 100644
--- a/lib/configfiles/bullseye.xml
+++ b/lib/configfiles/bullseye.xml
@@ -2707,7 +2707,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM mail_users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>
diff --git a/lib/configfiles/buster.xml b/lib/configfiles/buster.xml
index b7b484bf..aec4da46 100644
--- a/lib/configfiles/buster.xml
+++ b/lib/configfiles/buster.xml
@@ -2707,7 +2707,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM mail_users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>
diff --git a/lib/configfiles/centos7.xml b/lib/configfiles/centos7.xml
index 6ec83c48..df2c6fd9 100644
--- a/lib/configfiles/centos7.xml
+++ b/lib/configfiles/centos7.xml
@@ -1857,8 +1857,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 #  FROM users WHERE userid = '%u'
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM users
-iterate_query = SELECT username AS user FROM mail_users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 						</content>
 					</file>
diff --git a/lib/configfiles/centos8.xml b/lib/configfiles/centos8.xml
index db55f89a..7fde8162 100644
--- a/lib/configfiles/centos8.xml
+++ b/lib/configfiles/centos8.xml
@@ -1859,7 +1859,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 
 # Query to get a list of all usernames.
 #iterate_query = SELECT username AS user FROM users
-iterate_query = SELECT username AS user FROM mail_users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 						</content>
 					</file>
diff --git a/lib/configfiles/focal.xml b/lib/configfiles/focal.xml
index f0e4c462..111c4d1a 100644
--- a/lib/configfiles/focal.xml
+++ b/lib/configfiles/focal.xml
@@ -2161,7 +2161,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>
diff --git a/lib/configfiles/stretch.xml b/lib/configfiles/stretch.xml
index 67cdce50..9ccba11c 100644
--- a/lib/configfiles/stretch.xml
+++ b/lib/configfiles/stretch.xml
@@ -2734,7 +2734,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>
diff --git a/lib/configfiles/xenial.xml b/lib/configfiles/xenial.xml
index 356c469b..2ed4b59a 100644
--- a/lib/configfiles/xenial.xml
+++ b/lib/configfiles/xenial.xml
@@ -2745,7 +2745,7 @@ user_query = SELECT CONCAT(homedir, maildir) AS home, CONCAT('maildir:', homedir
 password_query = SELECT username AS user, password_enc AS password, CONCAT(homedir, maildir) AS userdb_home, uid AS userdb_uid, gid AS userdb_gid,  CONCAT('maildir:', homedir, maildir) AS userdb_mail, CONCAT('*:storage=', quota, 'M') as userdb_quota_rule FROM mail_users WHERE (username = '%u' OR email = '%u') AND ((imap = 1 AND '%Ls' = 'imap') OR (pop3 = 1 AND '%Ls' = 'pop3') OR ((postfix = 'Y' AND '%Ls' = 'smtp') OR (postfix = 'Y' AND '%Ls' = 'sieve')))
 
 # Query to get a list of all usernames.
-#iterate_query = SELECT username AS user FROM users
+iterate_query = "SELECT username AS user FROM mail_users WHERE (imap = 1 OR pop3 = 1)"
 ]]>
 							</content>
 						</file>