I need to split email delivery for domain1.com to two different external mail servers.
For example -
email@example.com and firstname.lastname@example.org will be managed by mx.mailserver1.com
email@example.com and firstname.lastname@example.org will be managed by mail.anotherserver.com
Can anyone recommend a mail server/ routing software that can direct the emails to the correct server?
I can work with any platform, so all suggestions welcome.