need some help to prevent spam

Question

How can I make Location field required on registration form?

How can I prevent some mail hosts (like mailcatch.com) on registration?

Answer 1

I don't think the core would allow you to do so. You'll have to create a filter module plugin for that. All the information is here: http://www.question2answer.org/modules.php?module=filter

As you can see you'll need to implement filter_profile function for the first question and filter_email function for your second one.

Answer 2

> How can I make Location field required on registration form?

My hack may help you. Extra Userfield

> How can I prevent some mail hosts (like mailcatch.com) on registration?

Refer to the answer of puti.