Merge pull request #1021 from eka7a/patch-3

Added v=DKIM1; prefix

bin/v-add-mail-domain

@@ -122,7 +122,7 @@ if [ ! -z "$DNS_SYSTEM" ] && [ "$dkim" = 'yes' ]; then
         $BIN/v-add-dns-record $user $domain $record TXT "$policy" '' '' 'no'
 
         record='mail._domainkey'
-        selector="\"k=rsa\; p=$p\""
+        selector="\"v=DKIM1\; k=rsa\; p=$p\""
         $BIN/v-add-dns-record $user $domain $record TXT "$selector"
     fi
 fi