diff --git a/CHANGELOG b/CHANGELOG
index f06640e3e1..e2f5ac9b09 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -80,6 +80,7 @@ Tickets:
 	- Fixed #307: Defect - Software installer - Many pages are missing in xml menu files
 	- Fixed #310: Defect - Error after inserting a SSL-certificate
 	- Fixed #311: Defect - autoinstaller cleans squirrel data folder
+	- Fixed #313: Some improvements on postfix's master.cf (tx aseques)
 
 -------------------------------------------------------------------------------------
 i-MSCP 1.0.1.5 (beta 5)
diff --git a/configs/debian/postfix/master.cf b/configs/debian/postfix/master.cf
index 9c25990fe9..49d6b3994f 100644
--- a/configs/debian/postfix/master.cf
+++ b/configs/debian/postfix/master.cf
@@ -116,7 +116,7 @@ imscp-arpl unix  -      n       n       -       -       pipe
 # po setup begin
 # dovecot begin
 dovecot   unix  -       n       n       -       -       pipe
-  flags=DRhu user={ARPL_USER} argv=/usr/lib/dovecot/deliver -d ${recipient}
+  flags=DRhu user={ARPL_USER} argv=/usr/lib/dovecot/deliver -f ${sender} -d ${recipient} -s
 # dovecot end
 # courier begin
 # courier end