diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index 3d86449..112166f 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -2078,6 +2078,25 @@ EOF
 
 fi
 
+# - At time, we don't use private tmp directory for divecot.
+# -
+echononl "\tAdjust Systemd service file, set PrivateTmp=false.."
+if [[ -f "/etc/systemd/system/dovecot.service" ]] ; then
+
+   if $(grep -o -E "PrivateTmp\s*=\s*[^[:blank:]]+" /etc/systemd/system/dovecot.service | grep -q true 2> /dev/null ) ; then 
+      perl -i -n -p -e "s/true/false/" /etc/systemd/system/dovecot.service
+      if [[ $? -eq 0 ]]; then
+         echo -e "$rc_done"
+      else
+         echo -e "$rc_failed"
+      fi
+   else
+      echo -e "$rc_skipped"
+   fi
+else
+   echo -e "$rc_skipped"
+fi
+
 # - Reload systemd
 # -
 echononl "\tReload systemd.."