fixed delimiter format for plain output

bin/v-delete-mail-domain

@@ -56,7 +56,7 @@ fi
 # Deleting dkim dns record
 if [ "$DKIM" = 'yes' ] && [ -e "$USER_DATA/dns/$domain.conf" ]; then
     records=$($BIN/v-list-dns-records $user $domain plain)
-    dkim_records=$(echo "$records" |grep -w '_domainkey' | cut -f 1 -d ' ')
+    dkim_records=$(echo "$records" |grep -w '_domainkey' |cut -f 1)
     for id in $dkim_records; do
         $BIN/v-delete-dns-record $user $domain $id
     done