Plesk Slave DNS Manager fails to propagate zones: 'site-name' element not expected error

Symptoms

• Synchronization of all DNS zones via Slave DNS Manager fails.

• The following messages are found in /var/log/plesk/panel.log with debug enabled when a new domain is created/new DNS record is created/DNS zone is synced:

  CONFIG_TEXT: [2026-06-24 18:31:39.921] 414122:6a3c228bdeab6 ERR [panel][] XML-RPC: Request is invalid. Error in line 1: Element 'site-name': This element is not expected. Expected is one of ( site-id, id, site-alias-id, dns-zone-name ). Original request: <?xml version="1.0"?>
  <packet version="1.6.9.1"><dns><get_rec><filter><site-name>example.com</site-name></filter></get_rec></dns></packet>

• rndc status check on the Master Plesk DNS server to slave is OK (where 203.0.113.2 - master, 203.0.113.3 - slave):

  # rndc -b 203.0.113.2 -s 203.0.113.3 -p 953 -c /usr/local/psa/var/modules/slave-dns-manager/slave_203.0.113.3.conf -y rndc-key status
  version: BIND 9.11.5-P4-5.1+deb10u3-Debian (Extended Support Version) <id:998753c>
  running on slave_server: Linux x86_64 4.19.0-13-cloud-amd64 #1 SMP Debian 4.19.160-2 (2020-11-28)
  boot time: Wed, 24 Jun 2026 19:00:30 GMT
  last configured: Wed, 24 Jun 2026 19:00:30 GMT
  configuration file: /etc/bind/named.conf
  CPUs found: 1
  worker threads: 1
  UDP listeners per interface: 1
  number of zones: 846 (97 automatic)
  debug level: 0
  xfers running: 0
  xfers deferred: 0
  soa queries in progress: 0
  query logging is OFF
  recursive clients: 0/900/1000
  tcp clients: 5/150
  server is up and running  

Cause

Slave DNS Manager extension bug with ID EXTPLESK-14071.

Resolution

Fixed in Slave DNS Manager ver. 1.10.8-0, to resolve the issue, update the extension as advised in the article below, section Updating a Plesk extension:
https://support.plesk.com/hc/en-us/articles/12377511962007-How-to-manage-Plesk-extensions-install-disable-remove-update