Unable to send emails to Zoho Inbox, not receiving emails on Zoho

Unable to send emails to Zoho Inbox, not receiving emails on Zoho

Hi, I am having issue with the mail service, I have already configured the MX records to work with Zoho. I have already waited 24hrs. Whenever I send an email from my email account, it gives me a mail delivery failure message. I get this error message on multiple email providers (like mail.com and yahoo.com). Is there any way to fix it?
My email address (Zoho) > epsilon_aerospace@xnoticeboard.com