To change the SOA record values, perform the following steps:
1 – Logged in to Plesk.
2 – Go to Websites & Domains.
3 – Click DNS Settings.
4 – Click SOA tab.
5 – Set the SOA record time.
6 – Click OK
Selecting the Use serial number format recommended by IETF and RIPE checkbox changes the way Plesk stores SOA serial numbers from the Unix timestamp to the YYYYMMDDNN format recommended by RIPE.