@akiflow/mailauth/lib/arc/trustlist.js

Email authentication library for Node.js

'use strict';

module.exports = {
    trusted: [
        // GSuite/Gmail
        'google.com',

        // O365
        'microsoft.com',

        // From https://github.com/trusteddomainproject/ARC_Community_Sealers/blob/master/community_sealer_whitelist
        'gmail.com',
        'googlegroups.com',
        'messagingengine.com',
        'pobox.com',
        'topicbox.com',
        'umich.edu',
        'fastmail.com',
        'fastmail.fm',
        'one.com',
        'securemx.jp',

        // Zone.eu specific
        'zone.eu',
        'teliaklm.ee'
    ]
};