As soon as you choose Your Business's email server through the Relationship from drop-down, Office 365 is immediately preferred from the Connection to fall-down. Quad9 delivers quite capable performance, too, with DNSPerf at this time ranking the service seventh from twelve General public DNS resolvers for ordinary globally question https://cloudflare-free-ssl77766.actoblog.com/27219575/iredmail-installation-an-overview