You can configure an unlimited number of domain aliases for a domain filter. All e-mail to all of those domains will be filtered, but all legal e-mail is forwarded to the e-mail user on the main domain.
- You configured the filter for example.com, using mail server mail.example.com
- For this domain, you add otherdomain.com as an alias
- An e-mail sent to firstname.lastname@example.org will be filtered, and is delivered to email@example.com
- The To field in the header will show the original e-mail address