This document covers the following topics:

• Creating and deleting DNS zones
• Adding Instant Aliases
• Adding custom DNS records

Enterprise DNS manager is available from the E.Manager menu:

Creating and Deleting DNS Zones

After selecting DNS Manager from the E.Manager menu, you will be brought to the following screen:

This table lists all the DNS zones you have created. Initially you have no zones, so you should add at least one. To add a DNS zone, click the Add DNS Zone link. You will be prompted to enter zone name and zone administrator e-mail and choose whether to allow third level domain hosting on this zone:

• Name: enter the name of the DNS zone you are going to create. If this domain name is not yet registered, don't forget to register it with a domain registration company.
• Admin e-mail: enter the e-mail address of this DNS zone administrator.
• Allow third level domain hosting: allow or prohibit the creation of lower level domains in this DNS zone.
• Master/slave server: available only for service DNS zones - allows you to choose which server will be the master and which will be the slave. The information is backed up every 1 hour.

After you submit the form, the new zone appears in the DNS Manager table:

Click the EDIT icon to go to the DNS zone management page. Here you can add instant aliases and DNS records to your DNS zone:

Adding Instant Aliases

Instant Alias provides users with instant access to their domains from the Internet. It is usually helpful when the DNS servers worldwide are being refreshed and the site is temporarily unavailable at the regular domain name.

Creating an instant alias will automatically add one or more A-DNS records to your service zone. These records resolve all your logical servers.

To add an instant alias, click the Add instant alias link. This will open the following form to fill out:

• Prefix: instant alias prefix that will appear before (on the left of) the instant domain in your instant domain alias. The prefix is required to distinguish between different instant aliases on one domain with shared IP.
• Shared IP tag: a digital "mark" that helps separate sites within one plan on one logical server. All sites located on the same logical host under the same plan are usually assigned the same shared IP. This feature allows to give a different shared IP to a group of sites of, say, explicit nature. This may become necessary as many corporate firewalls filter sites based on their IP, not the domain name.

  Normally, you are expected to have devoted one IP address for each shared IP tag. To use a shared IP tag you need to have it defined for every logical host. Go to the LServers section for instructions. Numbers 10 to 99 are acceptable. The default value of 2 is assigned when the field is submitted empty.

  If the IP address with the specified shared IP tag doesn't exist on one or more logical servers, you will get the corresponding message on the instant alias properties page.

  

  If you see this message, add a shared IP with this shared IP tag to the listed logical servers. Go to the LServers section for instructions.

After you have added an instant alias with a shared IP tag, you are taken back to the list of instant aliases. The new instant alias has appeared in the list. This means the system has added all necessary DNS records to the DNS zone. To open the list of these records, click the Edit icon for this DNS zone:

You will be taken to the DNS records page:

The upper part of the table lists the created DNS A records in the selected DNS zone.

The lower part of the table appears only when the DNS zone does not contain A records for some logical servers. It lists these logical servers with their IP's. To add a logical server to the DNS zone, click the Add button. You can add all these servers to the DNS zone by clicking the Add records to all listed logical servers link at the bottom of the table.

Adding Custom DNS Records

Aside from instant aliases, you can add custom DNS records to the selected DNS zone. These include:

• A records to map domain names and web server IP's.
• MX records to map domain names and their mail server IP's.
• CNAME records to map aliases with domain names.

To add a custom DNS record, go to the zone management page and select the record type from the drop-down list. Then click the Go button:

Adding custom A records

An A record gives you the IP address of a domain. That way, users that try to go to www.mydomain.com will get to the right IP address.

To add a new DNS A record, you need to provide a set of parameters:

• Name: the string appended to the domain name to create a FQDN mapped to the IP. For example, if your domain name is besthosting.com, entering cp will make the fully qualified domain name cp.besthosting.com.
• TTL: seconds to elapse before the record is refreshed in the provider's DNS cache.
• Data: the IP address the fully qualified domain name will be mapped to. You can get this IP address with any ping utility.

Adding custom MX records

Adding MX records is similar to adding A records:

In case of MX records, the Data field contains the preference and the mail domain name. If you leave the Name field blank, all mail will be redirected for this zone.

WARNING: Please pay attention to $ORIGIN when you add an MX record.

Adding custom CNAME records

If you have selected CNAME record, the following page appears:

In the case of CNAME records, the values have the same format as in the A record with the exception of the Data field. In the Data field you have to enter the name of the server to which you are creating the alias record.

WARNING: Please pay attention to $ORIGIN when you add a CNAME record.

The DNS records you create appear on the zone management page: