I have moved a copy of my 2 vendor test bed to another server to test. Emails work. BUT 🙁
The variations of the products do not show to the vendor. Meaning they have no idea which variation to send.
Not sure why emails can send one server vs. the other. I'm guessing it's a Mail server setting issue or something with the PHP.ini file. I have not reviewed the reasons of why on this. But It's the exact same copy of this 2 vendor set-up.
Again – the variations are not showing to the vendors. Pass this to your team, it defeats the plugin if it can not show variations to the vendor. YES the vendor could ask the admin; but if you have 400+ vendors, I'd prefer the system to do it, I think you'd agree.