diff --git a/pica-mail-mda/auth_plaintext/10-auth.conf b/pica-mail-mda/auth_plaintext/10-auth.conf
index 664cd8eca8f44b15fd28e0022783774af3146413..32fe3f5b5a83d8f1aa92cc91d384c43b66198e67 100644
--- a/pica-mail-mda/auth_plaintext/10-auth.conf
+++ b/pica-mail-mda/auth_plaintext/10-auth.conf
@@ -1,3 +1,6 @@
+#dovecot 10-auth.conf default file modified in order to allow plaintext authentication (ONLY FOR TESTING)
+#all Pica alterations are commented with a #/!\pica label
+
 ##
 ## Authentication processes
 ##
@@ -7,6 +10,7 @@
 # matches the local IP (ie. you're connecting from the same computer), the
 # connection is considered secure and plaintext authentication is allowed.
 # See also ssl=required setting.
+#/!\pica
 disable_plaintext_auth = no
 
 # Authentication cache size (e.g. 10M). 0 means it's disabled. Note that
@@ -119,6 +123,7 @@ auth_mechanisms = plain
 #!include auth-deny.conf.ext
 #!include auth-master.conf.ext
 
+#/!\pica comment 1st line (default) and uncomment 4th
 #!include auth-system.conf.ext
 #!include auth-sql.conf.ext
 #!include auth-ldap.conf.ext