add ref to post_final_validation hook

content/momentum/4/4-lua-summary-table.md

@@ -174,6 +174,8 @@ This section contains tables of Lua functions. Click the function name for detai
 | [msys.unlock](/momentum/4/lua/ref-msys-unlock) – Releases a lock obtained via msys.lock | mutexname | msys | 4.0 | any |
 | [msys.validate.dk.get_responsible_domain](/momentum/4/lua/ref-msys-validate-dk-get-responsible-domain) – This function requires module "dk_validate". "msg" is a mail message. "ctx" is the validation context. It returns the responsible domain for the current message | msg, ctx | msys.validate.dk | 4.0 | data, data_spool, data_spool_each_rcpt |
 | [msys.validate.dk.sign](/momentum/4/lua/ref-msys-validate-dk-sign) – Sign a message using a Domain Key | msg, ctx, options | msys.validate.dk | 4.0 | core_data_validation |
+| [msys.validate.openarc.sign](/momentum/4/lua/ref-msys-validate-openarc-sign) – Sign a message using OpenARC | msg, options, [ar] | msys.validate.openarc | 5.0 | core_post_final_validation |
+| [msys.validate.openarc.verify](/momentum/4/lua/ref-msys-validate-openarc-verify) – Verify ARC sets | m | msys.validate.openarc | 5.0 | data_spool, data_spool_each_rcpt |
 | [msys.validate.opendkim.get_num_sigs](/momentum/4/lua/ref-msys-validate-opendkim-get-num-sigs) – Return the number of DKIM signatures | dkim | msys.validate.opendkim | 4.0 | data, data_spool, data_spool_each_rcpt |
 | [msys.validate.opendkim.get_sig](/momentum/4/lua/ref-msys-validate-opendkim-get-sig) – Get a signature from a DKIM object | dkim, [num] | msys.validate.opendkim | 4.0 | data, data_spool, data_spool_each_rcpt |
 | [msys.validate.opendkim.get_sig_canons](/momentum/4/lua/ref-msys-validate-opendkim-get-sig-canons) – Fetch the canonicalizers used for a DKIM signature | dkim_sig | msys.validate.opendkim | 4.0 | data, data_spool, data_spool_each_rcpt |

content/momentum/4/hooks/index.md

@@ -1,6 +1,6 @@
 ---
-lastUpdated: "10/05/2021"
-title: "Category File"
+lastUpdated: "11/26/2024"
+title: "Hook Points and C Functions Reference"
 type: "custom"
 name: "Hook Points and C Functions Reference"
 description: "This chapter includes hook point and C function reference material that is specific to Momentum 4 Hook points and C functions that are common to Momentum 4 and Momentum 3 are provided in the Momentum 3 x documentation For hook points see the C API For C functions see the..."
@@ -11,6 +11,7 @@ description: "This chapter includes hook point and C function reference material
 |---------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|
 | [msg_gen_data_spool](/momentum/4/hooks/msg-gen-data-spool)                            | This hook is invoked after a message has been generated by the msg_gen module |
 | [config_rsrc_setup](/momentum/4/hooks/config-rsrc-setup)                              | Register a resource                                                           |
+| [core_post_final_validation](/momentum/4/hooks/core-post-final-validation)            | Same usage as but invoked right after the `core_final_validation` hook        |
 | [ec_config_rsrc_get](/momentum/4/apis-ec-config-rsrc-get)                             | Return a resource list blobject from the configuration system                 |
 | [ec_httpsrv_register_auth](/momentum/4/apis-ec-httpsrv-register-auth)                 | Register an HTTP handler for authenticating a URI                             |
 | [ec_httpsrv_request_local_address](/momentum/4/apis-ec-httpsrv-request-local-address) | Returns the local IP address from the current session                         |

content/momentum/4/lua/index.md

@@ -191,6 +191,8 @@ description: "This section details all Lua functions Functions are ordered alpha
 | [msys.tls_params.set](/momentum/4/lua/ref-msys-tls-params-set) | Set a tls parameter string on a per connection basis |
 | [msys.validate.dk.get_responsible_domain](/momentum/4/lua/ref-msys-validate-dk-get-responsible-domain) | Return the domain responsible for the current message |
 | [msys.validate.dk.sign](/momentum/4/lua/ref-msys-validate-dk-sign) | Sign a message using a Domain Key |
+| [msys.validate.opendarc.sign](/momentum/4/lua/ref-msys-validate-opendarc-sign) | Sign a message using OpenARC |
+| [msys.validate.opendarc.verify](/momentum/4/lua/ref-msys-validate-opendarc-verify) | Verify ARC sets |
 | [msys.validate.opendkim.get_num_sigs](/momentum/4/lua/ref-msys-validate-opendkim-get-num-sigs) | Return the number of DKIM signatures |
 | [msys.validate.opendkim.get_sig](/momentum/4/lua/ref-msys-validate-opendkim-get-sig) | Get a signature from a DKIM object |
 | [msys.validate.opendkim.get_sig_canons](/momentum/4/lua/ref-msys-validate-opendkim-get-sig-canons) | Fetch the canonicalizers used for a signature |

content/momentum/4/modules/openarc.md

@@ -33,13 +33,9 @@ openarc {}
 
 The `msys.validate.opendarc.sign` does verification first. You should only invoke one of the APIs,
     either `verify` or `sign` but not both.
-It's recommended to invoke `msys.validate.opendarc.verify` in `validate_data_spool` hook.
+It's recommended to invoke `msys.validate.opendarc.verify` in `validate_data_spool` or
+[`validate_data_spool_each_rcpt`](/momentum/3/3-api/hooks-core-validate-data-spool-each-rcpt) hook.
 `msys.validate.opendarc.sign` shall be invoked in the last validation phase, in
-`post_final_validation` hook.
-
-The `post_final_validation` hook is added as the absolute last point before writing the message into
-spool. No any message modification expected after this stage. To avoid undefined race between
-multiple implementations of the same hook, you shall only have up to one implementation for this
-hook. And it's the best place to call `msys.validate.opendarc.sign`.
+[`post_final_validation`](/momentum/4/hooks/core-post-final-validate) hook.
 
 See API examples for hook usages.

content/momentum/4/modules/summary-all-modules.md

@@ -70,6 +70,7 @@ All modules are listed alphabetically with a brief description. Singleton module
 | [msgc_client](/momentum/4/modules/msgc) (*singleton*) | 4.0 | The client component of MSGC |   |  ✓ |   |   |
 | [msgc_server](/momentum/4/modules/msgc) (*singleton*) | 4.0 | The server component of MSGC |   |  ✓ |   |   |
 | [“mxip - IP Addresses In MX Records”](/momentum/4/modules/mxip) | 4.2 | Enable Momentum to deliver to domains with a textual IP address |   |   |   |   |
+| [“opendarc – Open Source ARC”](/momentum/4/modules/opendarc) | 5.0 | Validate/sign mail using ARC |   |   |  ✓ |   |
 | [“opendkim – Open Source DKIM”](/momentum/4/modules/opendkim) | 4.0 | Validate/sign mail using DKIM signatures |   |   |  ✓ |   |
 | [“outbound_audit – Outbound traffic analytics”](/momentum/4/modules/outbound-audit) | 4.0 | Provides time-series analytics on the behavior of receiving domains |   |  ✓ |   |   |
 | [“outbound_smtp_auth”](/momentum/4/modules/outbound-smtp-auth) | 4.2 | Enables users to specify authentication parameters for a given set of messages |   |   |   |   |