php - How can I properly configure my email on signup form?

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I built a website with php and it has a signup form, when a user signs up, they receive a confirm account email. I created my sender email in cpanel and added it to my code. The user receives the email after signing up but with sender email as "bhp9bgfdxz@sxb1plzcpnl437832.prod.sxb1.secureserver.net" which is not my email address. Here is the link to my website askees.com