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Modifying Resource Records

To modify the properties of a resource record:

  1. Go to Domains > domain name > DNS Settings (in the Web Site group).
  2. Click the hyperlink in the Host column corresponding to the resource record you want to modify.
  3. Modify the record as required and click OK.

To modify the entries in the Start of Authority (SOA) record for a domain:

  1. Go to Domains > domain name > DNS Settings (in the Web Site group).
  2. Click SOA Record.
  3. Specify the desired values:
    • TTL. This is the amount of time that other DNS servers should store the record in a cache. Parallels Plesk Panel sets the default value of one day.
    • Refresh. This is how often the secondary name servers check with the primary name server to see if any changes have been made to the domain's zone file. Parallels Plesk Panel sets the default value of three hours.
    • Retry. This is the time a secondary server waits before retrying a failed zone transfer. This time is typically less than the refresh interval. Parallels Plesk Panel sets the default value of one hour.
    • Expire. This is the time before a secondary server stops responding to queries, after a lapsed refresh interval where the zone was not refreshed or updated. Parallels Plesk Panel sets the default value of one week.
    • Minimum. This is the time a secondary server should cache a negative response. Parallels Plesk Panel sets the default value of three hours.
  4. Click OK.

Usage of serial number format recommended by IETF and RIPE is mandatory for many domains registered in some high-level DNS zones, mostly European ones. If your domain is registered in one of these zones and your registrar refuses your SOA serial number, using serial number format recommended by IETF and RIPE should resolve this issue.

Parallels Plesk Panel servers use UNIX timestamp syntax for configuring DNS zones. UNIX timestamp is the number of seconds since January 1, 1970 (Unix Epoch). The 32-bit timestamp will overflow by July 8, 2038.

RIPE recommends using YYYYMMDDNN format, where YYYY is year (four digits), MM is month (two digits), DD is day of month (two digits) and NN is version per day (two digits). The YYYYMMDDNN format won't overflow until the year 4294.

To change the Start of Authority (SOA) serial number format to YYYYMMDDNN for a domain:

  1. Go to Domains > domain name > DNS Settings (in the Web Site group).
  2. Click SOA Record.
  3. Select the Use serial number format recommended by IETF and RIPE check box.

    Note: See the sample of SOA serial number generated with the selected format. If the resulting number is less, than the current zone number, the modification may cause temporary malfunction of DNS for this domain. Zone updates may be invisible to Internet users for some time.

  4. Click OK.