--- postfix-dovecot     2014-09-28 11:57:58.334278210 +0600
+++ /usr/lib/alterator/backend3/postfix-dovecot 2014-09-28 12:26:35.050204673 +0600
@@ -589,6 +589,7 @@
         type)
             write_type_item relayhost          hostname
             write_type_item message_size_limit postfix-limit
+            write_type_item mailbox_size_limit postfix-limit
             write_type_item domainlist         hostname-list
             #                  write_type_item filtered_recipients     hostname-list
             ;;
@@ -623,6 +624,7 @@
             # Root mail alias
             write_string_param rootmail "$(rootmail_read)"
             write_limit_param message_size_limit
+            write_limit_param mailbox_size_limit
 
             # Filter spam
             if [ "$(control_postfix)" = "filter" ]; then
@@ -695,6 +697,7 @@
 
       rootmail_write "$in_rootmail"
       read_limit_param message_size_limit "$in_message_size_limit"
+      read_limit_param mailbox_size_limit "$in_mailbox_size_limit"
 
       if test_bool "$in_filter_senders"; then
           postconf_restrict_on
--- ajax.scm    2014-09-28 12:23:12.546459906 +0600
+++ /usr/share/alterator/ui/postfix-dovecot/ajax.scm    2014-09-28 12:27:32.988913641 +0600
@@ -37,6 +37,7 @@
     (form-update-activity "mx"  domain_master)
     (form-update-activity "rootmail"  domain_master)
     (form-update-activity "message_size_limit"  domain_master)
+    (form-update-activity "mailbox_size_limit"  domain_master)
     (form-update-activity "spamfilter"  domain_master)
     (form-update-activity "filter_senders"  domain_master)
     (form-update-activity "mynetworks"  domain_master)
--- index.html  2014-09-28 12:23:12.546459906 +0600
+++ /usr/share/alterator/ui/postfix-dovecot/index.html  2014-09-28 12:30:08.877635670 +0600
@@ -71,6 +71,15 @@
                             <td><small><span translate="_">(Maximum message size in megabytes)</span></small><br/></td>
                         </tr>
 
+                        <tr>
+                            <td><span translate="_" name="mailbox_size_limit">Maximum mailbox size (MB):</span></td>
+                            <td><input type="text" class="text" name="mailbox_size_limit"/></td>
+                        </tr>
+
+                        <tr>
+                            <td>&nbsp;</td>
+                            <td><small><span translate="_">(Maximum mailbox size in megabytes)</span></small><br/></td>
+                        </tr>
 
                         <!-- SMTP SECURITY -->
                         <tr>