I am currently running QMail on a dedicated server with a number of existing users each with their own IMAP email account.
I have been forced to change my domain name. For simplicity, assume the original domain is old.com and the new domain is new.com.
I have already setup my MX record for new.com to point to the email server that is running at old.com.
Is there an easy way for me to configure QMail so that email sent to firstname.lastname@example.org will be sent to the existing account at email@example.com? I am looking to allow for a smooth transition to the new domain name that will allow the users to maintain their existing email folders and messages by simply changing the domain name in their email clients.
Optimally, I would all of my existing users to be able to use either domain during the transition to the new domain, but that's not a requirement, if the solution demands that I terminate functionality for old.com in order to implement the email at new.com.