Netlify Forms - Is email associated with form on a "bounce" list?

Good afternoon, I have a Netlify form associated with my website. The email address where notifications regarding form submissions go - hello@omniremovals.co.uk - was out of action for a little while but is now back in use. Whenever I test the form submissions with the hello@omniremovals.co.uk email attached, I do not get an email in my inbox. When using different emails, however, emails arrive in the inbox. Can you please advise as to what this issue is / could be? I look forward to your prompt response.

FYI, the email associated with my Netlify account is ftaojprspalm@icloud.com.

The website associated with my Netlify account is www.omniremovals.co.uk

Hi, thanks for reaching out! The email was on the hard bounce list. I have removed the email from the list.