Joseph Capers you need to add separate record, like this:

INSERT IGNORE INTO `bx_antispam_disposable_email_domains` (`id`, `domain`, `list`) VALUES
(NULL, 'gmail.com', 'custom_whitelist'),
(NULL, 'hotmail.com', 'custom_whitelist');
UPDATE `sys_options` SET `value` = 'whitelist' WHERE `name` = 'bx_antispam_disposable_email_domains_mode';