diff --git a/content/momentum/4/eol-policy.md b/content/momentum/4/eol-policy.md
index 72e750d68..40daa907e 100644
--- a/content/momentum/4/eol-policy.md
+++ b/content/momentum/4/eol-policy.md
@@ -61,11 +61,11 @@ Momentum version 5 became GA on March 1, 2025. Therefore:
| Momentum 4.4.x | 2021/9/3 | 2024/10/20¹ | 2024/12/31³ |
| Momentum 4.5.0 | 2023/10/5 | 2024/12/19² | 2027/3/1 |
| Momentum 4.6.0 | 2023/10/20 | 2024/12/19 | 2024/12/31³ |
-| Momentum 4.7.0 | 2023/12/19 | 2025/10/17 | 2027/3/1 |
-| Momentum 4.8.0 | 2024/10/17 | 2026/3/1 | 2027/3/1 |
-| Momentum 5.0.0 | 2025/3/1 | 2026/7/1 | TBD |
-| Momentum 5.1.0 | 2025/7/1 | 2027/1/31 | TBD |
-| **Momentum 5.2.0** | 2026/1/31 | TBD | TBD |
+| Momentum 4.7.x | 2023/12/19 | 2025/10/17 | 2027/3/1 |
+| Momentum 4.8.x | 2024/10/17 | 2026/3/1 | 2027/3/1 |
+| Momentum 5.0.x | 2025/3/1 | 2026/7/1 | TBD |
+| Momentum 5.1.x | 2025/7/1 | 2027/1/31 | TBD |
+| **Momentum 5.2.x** | 2026/1/31 | TBD | TBD |
> ¹ Momentum 4.4.x was superseded by 4.6, which was the last version supporting CentOS 7.
>
diff --git a/content/momentum/4/index.md b/content/momentum/4/index.md
index d0fc236ec..9ad4e78db 100644
--- a/content/momentum/4/index.md
+++ b/content/momentum/4/index.md
@@ -1,12 +1,12 @@
---
-lastUpdated: "09/30/2024"
+lastUpdated: "03/15/2026"
title: "Momentum 4.x and later"
-description: "Message Systems Inc Copyright 2014-2024 Message Systems Inc Confidential Proprietary Abstract This book documents Momentum 4 Document generated on 2024 Sep 30 Table of Contents Preface 1 Typographical Conventions Used in This Document I Introduction to Momentum 1 Components 2 Life of A Message 3 Roles and Behaviors 4 Licensed..."
+description: "Message Systems Inc Copyright 2014-2026 Message Systems Inc Confidential Proprietary Abstract This book documents Momentum 4 Document generated on 2026 Mar 15 Table of Contents Preface 1 Typographical Conventions Used in This Document I Introduction to Momentum 1 Components 2 Life of A Message 3 Roles and Behaviors 4 Licensed..."
---
### Message Systems, Inc.
-Copyright © 2014-2024 Message Systems, Inc.
+Copyright © 2014-2026 Message Systems, Inc.
@@ -16,15 +16,26 @@ Confidential & Proprietary.
This book documents Momentum 4 and later.
-Document generated on: 2024-Sep-30
+Document generated on: 2026-Mar-15
---
+### Momentum 5.x Changelogs
+
+- [Momentum 5.2.1 Changelogs](/momentum/changelog/5/5-2-1)
+- [Momentum 5.2.0 Changelogs](/momentum/changelog/5/5-2-0)
+- [Momentum 5.1.1 Changelogs](/momentum/changelog/5/5-1-1)
+- [Momentum 5.1.0 Changelogs](/momentum/changelog/5/5-1-0)
+- [Momentum 5.0.1 Changelogs](/momentum/changelog/5/5-0-1)
+- [Momentum 5.0.0 Changelogs](/momentum/changelog/5/5-0-0)
+
### Momentum 4.x Changelogs
-- [Momentum 4.8 Changelogs](/momentum/changelog/4/4-8)
-- [Momentum 4.7 Changelogs](/momentum/changelog/4/4-7)
-- [Momentum 4.6 Changelogs](/momentum/changelog/4/4-6)
+- [Momentum 4.8.6 Changelogs](/momentum/changelog/4/4-8-6)
+- [Momentum 4.8.0 Changelogs](/momentum/changelog/4/4-8-0)
+- [Momentum 4.7.7 Changelogs](/momentum/changelog/4/4-7-7)
+- [Momentum 4.7.0 Changelogs](/momentum/changelog/4/4-7-0)
+- [Momentum 4.6.0 Changelogs](/momentum/changelog/4/4-6-0)
- [Momentum 4.4.1 Changelogs](/momentum/changelog/4/4-4-1)
- [Momentum 4.4.0 Changelogs](/momentum/changelog/4/4-4-0)
- [Momentum 4.3.1 Changelogs](/momentum/changelog/4/4-3-1)
diff --git a/content/momentum/changelog/4/4-6.md b/content/momentum/changelog/4/4-6-0.md
similarity index 70%
rename from content/momentum/changelog/4/4-6.md
rename to content/momentum/changelog/4/4-6-0.md
index ef61411f8..64e7e1066 100644
--- a/content/momentum/changelog/4/4-6.md
+++ b/content/momentum/changelog/4/4-6-0.md
@@ -1,10 +1,10 @@
---
lastUpdated: "10/26/2023"
-title: "Momentum 4.6 Changelog"
-description: "Momentum 4.6 was released on 2023-10-26. This section will list all of the major changes that happened with the release of Momentum 4.6. Depending on installation type, all changes may not be applicable"
+title: "Momentum 4.6.0 Changelog"
+description: "Momentum 4.6.0 was released on 2023-10-26. This section will list all of the major changes that happened with the release of Momentum 4.6.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 4.6**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 4.6.0**. Depending on installation type, all changes may not be applicable
diff --git a/content/momentum/changelog/4/4-7.md b/content/momentum/changelog/4/4-7-0.md
similarity index 59%
rename from content/momentum/changelog/4/4-7.md
rename to content/momentum/changelog/4/4-7-0.md
index 2f19bd308..9fa873736 100644
--- a/content/momentum/changelog/4/4-7.md
+++ b/content/momentum/changelog/4/4-7-0.md
@@ -1,12 +1,12 @@
---
lastUpdated: "12/15/2023"
-title: "Momentum 4.7 Changelog"
-description: "Momentum 4.7 was released on 2023-12-20. This section will list all of the major changes that happened with the release of Momentum 4.7. Depending on installation type, all changes may not be applicable"
+title: "Momentum 4.7.0 Changelog"
+description: "Momentum 4.7.0 was released on 2023-12-20. This section will list all of the major changes that happened with the release of Momentum 4.7.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 4.7**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 4.7.0**. Depending on installation type, all changes may not be applicable
-
+
| Type | Ticket | Description |
| --- | --- | --- |
diff --git a/content/momentum/changelog/4/4-7-7.md b/content/momentum/changelog/4/4-7-7.md
new file mode 100644
index 000000000..c4e5a7a89
--- /dev/null
+++ b/content/momentum/changelog/4/4-7-7.md
@@ -0,0 +1,18 @@
+---
+lastUpdated: "03/15/2026"
+title: "Momentum 4.7.7 Changelog"
+description: "Momentum 4.7.7 was released on 2026-03-15. This section will list all of the major changes that happened with the release of Momentum 4.7.7. Depending on installation type, all changes may not be applicable"
+---
+
+This section will list all of the major changes that happened with the release of **Momentum 4.7.7**. Depending on installation type, all changes may not be applicable
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | ESC-2424 | Bounce message with a good CNAME but with NXDOMAIN for the aliased MX |
+| Fix | TASK-87814 | Changed the SPF module to avoid including expanded macros in the cache |
+| Fix | TASK-145503 | Fixed the SPF module to observe the maximum number of DNS queries for a lookup ([RFC 7208 4.6.4](https://datatracker.ietf.org/doc/html/rfc7208#section-4.6.4)) |
+| Fix | TASK-173906 | Fixed an `SSL_ERROR_SYSCALL` error with OpenSSL 3.5 that could lead to unexpected outbound disconnections |
+| Security Fix | TASK-5684 | Updated minor version of NodeJS (now 20.19.0) with CVE fixes |
+| Feature | | Added support for TLS connections to RabbitMQ servers for webhook delivery |
diff --git a/content/momentum/changelog/4/4-8.md b/content/momentum/changelog/4/4-8-0.md
similarity index 68%
rename from content/momentum/changelog/4/4-8.md
rename to content/momentum/changelog/4/4-8-0.md
index a247b25aa..f9e41ce0e 100644
--- a/content/momentum/changelog/4/4-8.md
+++ b/content/momentum/changelog/4/4-8-0.md
@@ -1,12 +1,12 @@
---
lastUpdated: "09/30/2024"
-title: "Momentum 4.8 Changelog"
-description: "Momentum 4.8 was released on 2024-09-30. This section will list all of the major changes that happened with the release of Momentum 4.8. Depending on installation type, all changes may not be applicable"
+title: "Momentum 4.8.0 Changelog"
+description: "Momentum 4.8.0 was released on 2024-09-30. This section will list all of the major changes that happened with the release of Momentum 4.8.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 4.8**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 4.8.0**. Depending on installation type, all changes may not be applicable
-
+
| Type | Ticket | Description |
| --- | --- | --- |
diff --git a/content/momentum/changelog/4/4-8-6.md b/content/momentum/changelog/4/4-8-6.md
new file mode 100644
index 000000000..1a2ad197e
--- /dev/null
+++ b/content/momentum/changelog/4/4-8-6.md
@@ -0,0 +1,18 @@
+---
+lastUpdated: "03/15/2026"
+title: "Momentum 4.8.6 Changelog"
+description: "Momentum 4.8.6 was released on 2026-03-15. This section will list all of the major changes that happened with the release of Momentum 4.8.6. Depending on installation type, all changes may not be applicable"
+---
+
+This section will list all of the major changes that happened with the release of **Momentum 4.8.6**. Depending on installation type, all changes may not be applicable
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | TASK-7142 | Postpone spool of messages generated by Sieve API [generate_mail_raw](/momentum/3/3-reference/sieve-ref-generate-mail-raw) until the final validation |
+| Fix | TASK-173906 | Fixed an `SSL_ERROR_SYSCALL` error with OpenSSL 3.5 that could lead to unexpected outbound disconnections |
+| Security Fix | TASK-5684 | Updated minor version of NodeJS (now 20.19.0) with CVE fixes |
+| Feature | | Added support for TLS connections to RabbitMQ servers for webhook delivery |
+| Feature | | New DNS configuration option to [limit reuse](/momentum/4/config/ref-dns-max-udp-queries-per-port) of dynamic source ports by queries |
+| Feature | | New DNS configuration options to throttle down the rate of MX queries |
diff --git a/content/momentum/changelog/4/index.md b/content/momentum/changelog/4/index.md
index 93a04c92f..5bd3575df 100644
--- a/content/momentum/changelog/4/index.md
+++ b/content/momentum/changelog/4/index.md
@@ -6,9 +6,11 @@ name: "Momentum 4.x Changelogs"
description: "Momentum 4.x Changelogs"
---
-* [Momentum 4.8 Changelogs](/momentum/changelog/4/4-8)
-* [Momentum 4.7 Changelogs](/momentum/changelog/4/4-7)
-* [Momentum 4.6 Changelogs](/momentum/changelog/4/4-6)
+* [Momentum 4.8.6 Changelogs](/momentum/changelog/4/4-8-6)
+* [Momentum 4.8.0 Changelogs](/momentum/changelog/4/4-8-0)
+* [Momentum 4.7.7 Changelogs](/momentum/changelog/4/4-7-7)
+* [Momentum 4.7.0 Changelogs](/momentum/changelog/4/4-7-0)
+* [Momentum 4.6.0 Changelogs](/momentum/changelog/4/4-6-0)
* [Momentum 4.4.1 Changelogs](/momentum/changelog/4/4-4-1)
* [Momentum 4.4.0 Changelogs](/momentum/changelog/4/4-4-0)
* [Momentum 4.3.1 Changelogs](/momentum/changelog/4/4-3-1)
diff --git a/content/momentum/changelog/5/5-0.md b/content/momentum/changelog/5/5-0-0.md
similarity index 63%
rename from content/momentum/changelog/5/5-0.md
rename to content/momentum/changelog/5/5-0-0.md
index a991dcc84..77c0df5e2 100644
--- a/content/momentum/changelog/5/5-0.md
+++ b/content/momentum/changelog/5/5-0-0.md
@@ -1,12 +1,12 @@
---
lastUpdated: "03/01/2025"
-title: "Momentum 5.0 Changelog"
-description: "Momentum 5.0 was released on 2025-03-01. This section will list all of the major changes that happened with the release of Momentum 5.0. Depending on installation type, all changes may not be applicable"
+title: "Momentum 5.0.0 Changelog"
+description: "Momentum 5.0.0 was released on 2025-03-01. This section will list all of the major changes that happened with the release of Momentum 5.0.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 5.0**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 5.0.0**. Depending on installation type, all changes may not be applicable
-
+
| Type | Ticket | Description |
| --- | --- | --- |
diff --git a/content/momentum/changelog/5/5-0-1.md b/content/momentum/changelog/5/5-0-1.md
new file mode 100644
index 000000000..6a8664a38
--- /dev/null
+++ b/content/momentum/changelog/5/5-0-1.md
@@ -0,0 +1,14 @@
+---
+lastUpdated: "03/15/2026"
+title: "Momentum 5.0.1 Changelog"
+description: "Momentum 5.0.1 was released on 2026-03-15. This section will list all of the major changes that happened with the release of Momentum 5.0.1. Depending on installation type, all changes may not be applicable"
+---
+
+This section will list all of the major changes that happened with the release of **Momentum 5.0.1**. Depending on installation type, all changes may not be applicable
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | TASK-173906 | Fixed an `SSL_ERROR_SYSCALL` error with OpenSSL 3.5 that could lead to unexpected outbound disconnections |
+| Security Fix | TASK-5996 | Updated minor version of NodeJS (now 20.19.0) with CVE fixes |
diff --git a/content/momentum/changelog/5/5-1.md b/content/momentum/changelog/5/5-1-0.md
similarity index 79%
rename from content/momentum/changelog/5/5-1.md
rename to content/momentum/changelog/5/5-1-0.md
index 4cb6f5e6d..e0bbf9df4 100644
--- a/content/momentum/changelog/5/5-1.md
+++ b/content/momentum/changelog/5/5-1-0.md
@@ -1,12 +1,12 @@
---
lastUpdated: "07/01/2025"
-title: "Momentum 5.1 Changelog"
-description: "Momentum 5.1 was released on 2025-07-01. This section will list all of the major changes that happened with the release of Momentum 5.1. Depending on installation type, all changes may not be applicable"
+title: "Momentum 5.1.0 Changelog"
+description: "Momentum 5.1.0 was released on 2025-07-01. This section will list all of the major changes that happened with the release of Momentum 5.1.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 5.1**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 5.1.0**. Depending on installation type, all changes may not be applicable
-
+
| Type | Ticket | Description |
| --- | --- | --- |
diff --git a/content/momentum/changelog/5/5-1-1.md b/content/momentum/changelog/5/5-1-1.md
new file mode 100644
index 000000000..64ab3d0a5
--- /dev/null
+++ b/content/momentum/changelog/5/5-1-1.md
@@ -0,0 +1,13 @@
+---
+lastUpdated: "03/15/2026"
+title: "Momentum 5.1.1 Changelog"
+description: "Momentum 5.1.1 was released on 2026-03-15. This section will list all of the major changes that happened with the release of Momentum 5.1.1. Depending on installation type, all changes may not be applicable"
+---
+
+This section will list all of the major changes that happened with the release of **Momentum 5.1.1**. Depending on installation type, all changes may not be applicable
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | TASK-173906 | Fixed an `SSL_ERROR_SYSCALL` error with OpenSSL 3.5 that could lead to unexpected outbound disconnections |
diff --git a/content/momentum/changelog/5/5-2.md b/content/momentum/changelog/5/5-2-0.md
similarity index 83%
rename from content/momentum/changelog/5/5-2.md
rename to content/momentum/changelog/5/5-2-0.md
index 3d13e1ab6..a7878923a 100644
--- a/content/momentum/changelog/5/5-2.md
+++ b/content/momentum/changelog/5/5-2-0.md
@@ -1,12 +1,12 @@
---
lastUpdated: "01/31/2026"
-title: "Momentum 5.2 Changelog"
-description: "Momentum 5.2 was released on 2026-01-31. This section will list all of the major changes that happened with the release of Momentum 5.2. Depending on installation type, all changes may not be applicable"
+title: "Momentum 5.2.0 Changelog"
+description: "Momentum 5.2.0 was released on 2026-01-31. This section will list all of the major changes that happened with the release of Momentum 5.2.0. Depending on installation type, all changes may not be applicable"
---
-This section will list all of the major changes that happened with the release of **Momentum 5.2**. Depending on installation type, all changes may not be applicable
+This section will list all of the major changes that happened with the release of **Momentum 5.2.0**. Depending on installation type, all changes may not be applicable
-
+
| Type | Ticket | Description |
| --- | --- | --- |
diff --git a/content/momentum/changelog/5/5-2-1.md b/content/momentum/changelog/5/5-2-1.md
new file mode 100644
index 000000000..0517fc1d7
--- /dev/null
+++ b/content/momentum/changelog/5/5-2-1.md
@@ -0,0 +1,13 @@
+---
+lastUpdated: "03/15/2026"
+title: "Momentum 5.2.1 Changelog"
+description: "Momentum 5.2.1 was released on 2026-03-15. This section will list all of the major changes that happened with the release of Momentum 5.2.1. Depending on installation type, all changes may not be applicable"
+---
+
+This section will list all of the major changes that happened with the release of **Momentum 5.2.1**. Depending on installation type, all changes may not be applicable
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | TASK-173906 | Fixed an `SSL_ERROR_SYSCALL` error with OpenSSL 3.5 that could lead to unexpected outbound disconnections |
diff --git a/content/momentum/changelog/5/index.md b/content/momentum/changelog/5/index.md
index 86663e240..bb0d99fc4 100644
--- a/content/momentum/changelog/5/index.md
+++ b/content/momentum/changelog/5/index.md
@@ -6,6 +6,9 @@ name: "Momentum 5.x Changelogs"
description: "Momentum 5.x Changelogs"
---
-* [Momentum 5.0 Changelogs](/momentum/changelog/5/5-0)
-* [Momentum 5.1 Changelogs](/momentum/changelog/5/5-1)
-* [Momentum 5.2 Changelogs](/momentum/changelog/5/5-2)
+* [Momentum 5.2.1 Changelogs](/momentum/changelog/5/5-2-1)
+* [Momentum 5.2.0 Changelogs](/momentum/changelog/5/5-2-0)
+* [Momentum 5.1.1 Changelogs](/momentum/changelog/5/5-1-1)
+* [Momentum 5.1.0 Changelogs](/momentum/changelog/5/5-1-0)
+* [Momentum 5.0.1 Changelogs](/momentum/changelog/5/5-0-1)
+* [Momentum 5.0.0 Changelogs](/momentum/changelog/5/5-0-0)
diff --git a/content/momentum/navigation.yml b/content/momentum/navigation.yml
index b4709adee..d48717903 100644
--- a/content/momentum/navigation.yml
+++ b/content/momentum/navigation.yml
@@ -1981,19 +1981,31 @@
- link: /momentum/changelog/5
title: Momentum 5.x Changelog
items:
- - link: /momentum/changelog/5/5-1
- title: Momentum 5.1 Changelog
- - link: /momentum/changelog/5/5-0
- title: Momentum 5.0 Changelog
+ - link: /momentum/changelog/5/5-2-1
+ title: Momentum 5.2.1 Changelog
+ - link: /momentum/changelog/5/5-2-0
+ title: Momentum 5.2.0 Changelog
+ - link: /momentum/changelog/5/5-1-1
+ title: Momentum 5.1.1 Changelog
+ - link: /momentum/changelog/5/5-1-0
+ title: Momentum 5.1.0 Changelog
+ - link: /momentum/changelog/5/5-0-1
+ title: Momentum 5.0.1 Changelog
+ - link: /momentum/changelog/5/5-0-0
+ title: Momentum 5.0.0 Changelog
- link: /momentum/changelog/4
title: Momentum 4.x Changelog
items:
- - link: /momentum/changelog/4/4-8
- title: Momentum 4.8 Changelog
- - link: /momentum/changelog/4/4-7
- title: Momentum 4.7 Changelog
- - link: /momentum/changelog/4/4-6
- title: Momentum 4.6 Changelog
+ - link: /momentum/changelog/4/4-8-6
+ title: Momentum 4.8.6 Changelog
+ - link: /momentum/changelog/4/4-8-0
+ title: Momentum 4.8.0 Changelog
+ - link: /momentum/changelog/4/4-7-7
+ title: Momentum 4.7.7 Changelog
+ - link: /momentum/changelog/4/4-7-0
+ title: Momentum 4.7.0 Changelog
+ - link: /momentum/changelog/4/4-6-0
+ title: Momentum 4.6.0 Changelog
- link: /momentum/changelog/4/4-4-1
title: Momentum 4.4.1 Changelog
- link: /momentum/changelog/4/4-4-0