I am registering domains on behalf of customers and host their websites on my server.
I have complete control over the DNS setup of my customer domains. I still want to host their websites, but I don't want to be responsible for their emails
Now they need forwarding of some emails of their domains to existing mail accounts on other hosters (hotmail, gmail, etc.).
What I need is the following:
I would set the MX-record to a provider, where I can configure forwarding rules for the emails of my customers.
Would a service provider charge you for that kind of forwarding-service? There would be no storage needed at that provider, only some throughgoing traffic from the forwarded emails.