I Have a couple of Zencart stores designed for the company I work for, using the standard PHP email system.

When a customer places an order, I never receive an email through any email address I enter in the from/to section of configure>email options - I only receive emails to any addresses I put in the 'send extra order confirmation' section.

This is an error, because I have another couple of Zencart stores personally, using the same webhosting company, but a different account, and they email out fine, no matter what email address I enter in to receive them. All the email settings on all the sites are the same.

Does anyone have any ideas what this could be?. How does the transport or internal protocol for the admin order emails differ to the customer or 'extra confirmation' order email system?. Could a PHP issue on the server affect this, or would it not affect both?

Can any DNS issues affect this, or again would it just simply affect both?