Rewrite the MX record fetching for something that generates less output in the database, and that's easier to query
Rewrite the MX record fetching for something that generates less output in the database, and that's easier to query

NZRS/dnscheck,NZRS/dnscheck,NZRS/dnscheck,NZRS/dnscheck,NZRS/dnscheck,NZRS/dnscheck