| error message | Possible causes | Recommendations for their removal |
|---|---|---|
| 1. During verification of the zone serial number (SOA serial number) zone number on the primary server was found to be lower than that on the secondary number | Primary DNS server configuration error | Ask your primary server administrator to correct an error |
| 2. During an attempt of scheduled update of the zone contents primary DNS server reported that no such zone exists. | IP address of a primary server is incorrect | Check IP address of primary server and make changes in the service settings |
| Primary DNS server configuration error | Ask your primary server administrator to correct an error | |
| No zone file on a primary DNS server | Ask your primary server administrator for more information | |
| 3. During an attempt of scheduled update of the zone contents primary DNS server was inaccessible. | IP address of a primary server is incorrect | Check IP address of primary server and make changes in the service settings |
| No connection or poor connection between secondary and primary DNS servers | Contact your primary server administrator or his Internet service provider | |
| Primary DNS server configuration error | Ask your primary server administrator to correct an error | |
| 4. Zone transfer failed on the part of primary server during scheduled update of the zone contents. | IP address of a primary server is incorrect | Check IP address of primary server and make changes in the service settings |
| Configuration error of primary DNS server | Ask the administrator of primary server for the solution | |
| Request for primary DNS server connection denied | Ask the administrator of primary server for the solution | |
| 5. Error encountered in records while updating zone contents: CNAME record matches zone name . | Error in zone description on the primary DNS server | Do not use CNAME record for the name matching zone name |
| 6. Error encountered in records while updating zone contents: there is no SOA record for the domain in primary DNS server | Configuration error of the primary DNS server | Ask the administrator of primary server for the solution |
| 7. Error encountered in records while updating zone contents: there is no SOA record for the domain in primary DNS server | Error in zone description on the primary DNS server | Specify NS record for the domain in zone records |