diff --git a/create_master_zone_file.sh b/create_master_zone_file.sh
index a57df1e..3012059 100755
--- a/create_master_zone_file.sh
+++ b/create_master_zone_file.sh
@@ -733,13 +733,15 @@ EOF
    if [[ -n "$MX_HOST_2" ]] ; then
       cat << EOF >> "${ZONE_FILE_MASTER_DIR}/${DOMAIN}.zone"
 @                    IN MX    10 ${MX_HOST_2}.
+EOF
+   fi
+   cat << EOF >> "${ZONE_FILE_MASTER_DIR}/${DOMAIN}.zone"
 
 ;
 ; TXT (u.a. SPF)
 ;
-@                    IN TXT   "v=spf1 a mx -all"
+@               3600 IN TXT   "v=spf1 a mx -all"
 EOF
-   fi
 elif [[ -n "${DEFAULT_MX_HOST_1}" ]] ; then
    cat << EOF >> "${ZONE_FILE_MASTER_DIR}/${DOMAIN}.zone"
 
@@ -752,7 +754,7 @@ elif [[ -n "${DEFAULT_MX_HOST_1}" ]] ; then
 ;
 ; TXT (u.a. SPF)
 ;
-;@                    IN TXT   "v=spf1 a mx -all"
+;@               3600 IN TXT   "v=spf1 a mx -all"
 EOF
 fi