I've got some generic contact forms on my clients website. When I test them I can send them to my email address (and my gmail account and my work mates addresses) successfully, but the client claims they are not receiving them at all (did have them check the spam folder - nothing there).
CPanel doesnt show any errors and if I use the Track Delivery tool it says it works fine.
This is a LAMP stack shared server environment.
I am using the PHP mail function to send.
Running an MX check on the site reveals nothing unordinary.
There are no errors in the error log.
Would anyone know what's going on here?