Blocking out domains isn't a recommended practice, as it doesn't solve the problem that your forms should be spam-proof. You could temporarily create a global workflow in your database to ensure that those domains are not passed through to your CRM or you can assign negative lead scoring values. How do I block certain domains from filling out my forms? (Access the blog here.) First off: please, don't do this. There are few reasons to do this, especially because most people want to block free domains or certain characters. There are quite a few people, especially in technical industries, who will use disposable addresses or character separators for filtering early in your funnel. Irritating people who want to engage with you, regardless of their email, is not going to help much. Other resources: https://nation.marketo.com/community/champion/blog/2017/10/30/common-form-faqs Fillouts
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