7.6 Domain alias
Prev | Chapter 7 Domain and its settings | Next

## 7.6 Domain alias

It is possible to define any number of virtual domains (aliases) for the each email domain. Virtual domains are alternative names (aliases) for a particular domain. Names of the virtual domains can be specified in the Aliases section. Email addresses within the virtual domains are identical (delivery is performed to the identical mailboxes). If this option is used, individual user accounts can belong to multiple domains.

Usage of domain aliases will be better understood through the following example:

A company uses two domains: `company.us` and `company.com`. The `company.us` domain is was set as a mail domain in Kerio MailServer. Email addresses of the domain users are `user@company.us`. If we create the `company.com` domain alias for the `company.us` domain, it is also possible to use the `user@company.com` for identical users. It does not matter, whether the `user@company.us` or the `user@company.com` is used. In both cases, the mail is delivered to the same user.

### Warning

Unless this is a local alias (virtual domain), corresponding MX records must be defined in DNS for each of such domains. A simple definition of the domain as an alias of another domain does not make the alias exist in the Internet.

Domain aliases can be used only for email delivery. It is not possible to use them for user authentication at Kerio MailServer or to view the Free/Busy server. Domain aliases cannot be used for administration purposes.

### Settings of a domain alias

To set a domain alias in Kerio MailServer, follow these guidelines:

Figure 7.7. Domain settings — equivalent domains (aliases)

1. Open the administration interface and go to Configuration → Domains.

2. Open settings of the domain which the alias will be set for and go to the Aliases tab.

3. To set a new alias, click on Add (see figure 7.7 Domain settings — equivalent domains (aliases)).

Prev | Up | Next
7.5 Automated items clean-out | Contents | 7.7 Authentication of domain users