my mailserver1 has been configured properly and it is up and running without any problem. Just do not have the idea of setting up and backup mail server.
It isnt really a vpopmail issue, it is a Qmail issue.
You put it in rcpthosts on mailserver2, that means it will recive mail for that domain, since it isnt in the local domains, or virtualdomains, it cant deliver it locally, and will try to deliver it remotely.
- with standard settings it should keep trying for 5 days, then give up
- you dont need vpopmail installed, just a plain Qmail server
(somebody please correct me if im wrong)