diff --git a/dns/ddclient/Makefile b/dns/ddclient/Makefile
index 091f84cee..d2d3a3d02 100644
--- a/dns/ddclient/Makefile
+++ b/dns/ddclient/Makefile
@@ -1,6 +1,6 @@
 PLUGIN_NAME=		ddclient
-PLUGIN_VERSION=		1.13
-PLUGIN_REVISION=	2
+PLUGIN_VERSION=		1.14
+#PLUGIN_REVISION=	1
 PLUGIN_DEPENDS=		ddclient-devel
 PLUGIN_COMMENT=		Dynamic DNS client
 PLUGIN_MAINTAINER=	ad@opnsense.org
diff --git a/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml b/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
index c0aac07e9..7afd4b9c4 100644
--- a/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
+++ b/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
@@ -27,7 +27,10 @@
         <id>account.server</id>
         <label>Server</label>
         <type>text</type>
-        <help>DynDNS Server</help>
+        <help>DynDNS Server hostname or uri to use (depending on the protocol).
+         When a URI is provided, the tag __MYIP__ will be replaced with the current detected address for this service
+         and __HOSTNAME__ will contain the (comma separated) list of hostnames provided.
+         </help>
         <style>optional_setting service_custom</style>
     </field>
     <field>
diff --git a/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.php b/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.php
index 00726445e..969d52691 100644
--- a/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.php
+++ b/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.php
@@ -1,7 +1,7 @@
 <?php
 
 /*
- * Copyright (C) 2021 Deciso B.V.
+ * Copyright (C) 2021-2023 Deciso B.V.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -28,6 +28,7 @@
 
  namespace OPNsense\DynDNS;
 
+ use Phalcon\Messages\Message;
  use OPNsense\Base\BaseModel;
 
  /**
@@ -36,4 +37,45 @@
   */
 class DynDNS extends BaseModel
 {
+    public function performValidation($validateFullModel = false)
+    {
+        $messages = parent::performValidation($validateFullModel);
+        $validate_servers = [];
+        foreach ($this->getFlatNodes() as $key => $node) {
+            $tagName = $node->getInternalXMLTagName();
+            $parentNode = $node->getParentNode();
+            if ($validateFullModel || $node->isFieldChanged()) {
+                if ($parentNode->getInternalXMLTagName() === 'account' && in_array($tagName, ['protocol', 'server'])) {
+                    $parentKey = $parentNode->__reference;
+                    $validate_servers[$parentKey] = $parentNode;
+                }
+            }
+        }
+        foreach ($validate_servers as $key => $node) {
+            if ((string)$node->service != 'custom') {
+                continue;
+            }
+            $srv = (string)$node->server;
+            if  ((string)$node->protocol == 'post') {
+                if (empty($srv) || filter_var($srv, FILTER_VALIDATE_URL) === false) {
+                    $messages->appendMessage(
+                        new Message(
+                            gettext("A valid URI is required."),
+                            $key . ".server"
+                        )
+                    );
+                }
+            } else {
+                if (empty($srv) || filter_var($srv, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME) === false) {
+                    $messages->appendMessage(
+                        new Message(
+                            gettext("A valid domain is required."),
+                            $key . ".server"
+                        )
+                    );
+                }
+            }
+        }
+        return $messages;
+    }
 }
diff --git a/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.xml b/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.xml
index a04ca3794..1bc908dec 100644
--- a/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.xml
+++ b/dns/ddclient/src/opnsense/mvc/app/models/OPNsense/DynDNS/DynDNS.xml
@@ -93,11 +93,11 @@
                     <OptionValues>
                         <dyndns1>DynDns1</dyndns1>
                         <dyndns2>DynDns2</dyndns2>
+                        <post>custom POST</post>
                     </OptionValues>
                 </protocol>
-                <server type="HostnameField">
+                <server type="TextField">
                     <Required>N</Required>
-                    <IpAllowed>N</IpAllowed>
                 </server>
                 <username type="TextField">
                     <Required>N</Required>
@@ -105,7 +105,7 @@
                     <ValidationMessage>The username contains invalid characters.</ValidationMessage>
                 </username>
                 <password type="UpdateOnlyTextField">
-                    <Required>Y</Required>
+                    <Required>N</Required>
                     <mask>/^[^\n]*$/</mask>
                 </password>
                 <resourceId type="TextField">
diff --git a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/__init__.py b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/__init__.py
index b74f08c3c..e143cc28b 100755
--- a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/__init__.py
+++ b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/__init__.py
@@ -120,6 +120,7 @@ class BaseAccount:
             interface = self.settings['interface'] if self.settings.get('interface' ,'').strip() != '' else None
         )
 
+
         if self._current_address != '' and (
                 self._state.get('ip') is None or
                 self._current_address != self._state.get('ip') or
diff --git a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/azure.py b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/azure.py
index 11fd3c637..64a635ab0 100755
--- a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/azure.py
+++ b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/azure.py
@@ -84,6 +84,7 @@ class Azure(BaseAccount):
     def known_services():
         return  Azure._services
 
+    @staticmethod
     def match(account):
         return account.get('service') in Azure._services
 
diff --git a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/cloudflare.py b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/cloudflare.py
index 388c2b147..1fd15ada8 100755
--- a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/cloudflare.py
+++ b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/cloudflare.py
@@ -44,6 +44,7 @@ class Cloudflare(BaseAccount):
     def known_services():
         return  Cloudflare._services.keys()
 
+    @staticmethod
     def match(account):
         return account.get('service') in Cloudflare._services
 
diff --git a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
index e53b14c83..aef23eb43 100755
--- a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
+++ b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
@@ -55,35 +55,46 @@ class DynDNS2(BaseAccount):
     def known_services():
         return  list(DynDNS2._services.keys()) + ['custom']
 
+    @staticmethod
     def match(account):
-        if account.get('service') in DynDNS2._services or (
-            account.get('server') is not None and account.get('protocol') in ['dyndns2', 'dyndns1']
-        ):
+        if account.get('service') in DynDNS2.known_services():
             return True
         else:
             return False
 
     def execute(self):
         if super().execute():
-            proto = 'https' if self.settings.get('force_ssl', False) else 'http'
-            if self.settings.get('service') in self._services:
-                url = "%s://%s/nic/update" % (proto, self._services[self.settings.get('service')])
+            protocol = self.settings.get('protocol', None)
+            if protocol == 'post':
+                url = self.settings.get('server')
+                url = url.replace('__MYIP__', self.current_address)
+                url = url.replace('__HOSTNAME__', self.settings.get('hostnames'))
+                req = requests.post(
+                    url=url,
+                    headers={'User-Agent': 'OPNsense-dyndns'},
+                    auth=HTTPBasicAuth(self.settings.get('username'), self.settings.get('password'))
+                )
             else:
-                url = "%s://%s/nic/update" % (proto, self.settings.get('server'))
+                uri_proto = 'https' if self.settings.get('force_ssl', False) else 'http'
+                if self.settings.get('service') in self._services:
+                    url = "%s://%s/nic/update" % (uri_proto, self._services[self.settings.get('service')])
+                else:
+                    url = "%s://%s/nic/update" % (uri_proto, self.settings.get('server'))
 
-            req_opts = {
-                'url': url,
-                'params': {
-                    'hostname': self.settings.get('hostnames'),
-                    'myip': self.current_address,
-                    'wildcard': 'ON' if self.settings.get('wildcard', False) else 'NOCHG'
-                },
-                'auth': HTTPBasicAuth(self.settings.get('username'), self.settings.get('password')),
-                'headers': {
-                    'User-Agent': 'OPNsense-dyndns'
+                req_opts = {
+                    'url': url,
+                    'params': {
+                        'hostname': self.settings.get('hostnames'),
+                        'myip': self.current_address,
+                        'wildcard': 'ON' if self.settings.get('wildcard', False) else 'NOCHG'
+                    },
+                    'auth': HTTPBasicAuth(self.settings.get('username'), self.settings.get('password')),
+                    'headers': {
+                        'User-Agent': 'OPNsense-dyndns'
+                    }
                 }
-            }
-            req = requests.get(**req_opts)
+                req = requests.get(**req_opts)
+
             if req.status_code == 200:
                 if self.is_verbose:
                     syslog.syslog(