add exit error code

bin/vmail-domains-mod.sh

@@ -34,7 +34,7 @@ if [[ -n $domain ]]; then
   fi
 else
   echo "domain name is required"
-  exit
+  exit 1
 fi
 
 # set update portion of command to empty string
@@ -88,7 +88,7 @@ if [[ -n $status ]]; then
     dbset="$dbset status=\"$status\""
   else
     echo "ERROR: status (-s) must be 1 or 0"
-    exit
+    exit 1
   fi
 fi
 
@@ -101,5 +101,6 @@ if [ -n "$dbset" ]; then
 else
 
   echo "ERROR: No values passed for update."
+  exit 1
 
 fi