I have a client with an ecommerce site. It's working fine but we realised that Hotmail accounts are not receiving emails from the site (eg: the receipt when someone orders a product).
We tested by creating an account and sending mail via Roundcube to a Hotmail account but got no results. Server mail logs say the email's been sent. We do not get any error messages bouncing back. The server does not appear to be on any blacklists and, of course, we've checked the spam folders.
Would anyone know what's going on here?
Server is a shared-server with LAMP stack.
Update: the server is able to receive emails from Hotmail. Replying to this email works.