*.united.com AND *@united.com - calrification

[James Pifer]

If I wanted all mail from united.com to be allowed would it be correct
to whitelist both:
*.united.com
*@united.com

Whitelisting *united.com would not be generic enough right? Something
like joe at myhomeunited.com would get through.

I did look at the EXAMPLES and README and just want to make sure I do it
correctly.

Thanks,
James