diff --git a/content/momentum/4/modules/auth-radius.md b/content/momentum/4/modules/auth-radius.md
index b9b8c0c9..804bb119 100644
--- a/content/momentum/4/modules/auth-radius.md
+++ b/content/momentum/4/modules/auth-radius.md
@@ -16,15 +16,15 @@ The following example demonstrates how to configure Momentum to pass LOGIN crede
```
# Configure the RADIUS client
auth_radius {
- NAS-IP-Address = 10.0.0.1 # the IP address of this SMTP server
+ NAS-IP-Address = fd01:345::1 # the IP address of this SMTP server
server "one" {
host = "radius-1.example.com"
secret = "secret1"
max_tries = "1"
timeout = "30"
}
- server "two" {
- host = "radius-2.example.com"
+ server "ipv6wport" {
+ host = "[2001:fd3::1]:2812"
secret = "secret2"
max_tries = "2"
timeout = "30"
@@ -85,7 +85,7 @@ RADIUS servers can be defined using the dictionary syntax shown above; the dicti
-The hostname or IP address of the RADIUS server. If a colon is present in the string then the left side of the string will be used as the hostname/IP address and the right hand side will be used as the port number on the server. If left unspecified, the RADIUS standard port number of 1812 will be used.
+The hostname or IP address of the RADIUS server. The hostname/IP address can be followed by a colon and the port number on the server. If left unspecified, the RADIUS standard port number of 1812 will be used. An IPv6 address must be enclosed in brackets if a port was added.
diff --git a/content/momentum/4/modules/mail-loop.md b/content/momentum/4/modules/mail-loop.md
index d9533bf4..29d0f68c 100644
--- a/content/momentum/4/modules/mail-loop.md
+++ b/content/momentum/4/modules/mail-loop.md
@@ -8,7 +8,7 @@ description: "The mail loop module provides automatic suppression of potential m
The mail_loop module provides automatic suppression of potential mail loops with two standard mechanisms:
-* Suppression of delivery attempts to any configured IP interfaces on the machine.
+* Suppression of delivery attempts to any configured IP interfaces on the machine, including IPv6.
* Suppression of messages with more than a specified number of Received headers.
diff --git a/content/momentum/4/modules/mxip.md b/content/momentum/4/modules/mxip.md
index ef2382cd..3af00536 100644
--- a/content/momentum/4/modules/mxip.md
+++ b/content/momentum/4/modules/mxip.md
@@ -63,7 +63,7 @@ mxip.example. 86400 IN NS localhost.
The mxip module implements a dns_get_As hook in order to augment the DNS resolution behaviour. If your integration or deployment also implements a dns_get_As hook, then you may not be able to use the mxip module.
-The mxip module only supports IPv4 addresses in the hostname field of MX records. IPv6 addresses are explicitly not supported by the mxip module.
+The mxip module supports IPv4 (and IPv6 as of Momentum 5.1) addresses in the hostname field of MX records.
The mxip module can be configured as follows:
diff --git a/content/momentum/4/modules/url-ripper.md b/content/momentum/4/modules/url-ripper.md
index 69975f20..7ea8cc95 100644
--- a/content/momentum/4/modules/url-ripper.md
+++ b/content/momentum/4/modules/url-ripper.md
@@ -62,7 +62,7 @@ Explicitly specifies headers from which emails (and in turn mailbox domains) sho
-Describes the base domain under which prospects should be resolved.
+Describes the base domain under which prospects should be resolved. To utilize the IPv6 support added in Momentum 5.1, select a DNSBL server that supports IPv6 addresses.
diff --git a/content/momentum/changelog/5/5-0.md b/content/momentum/changelog/5/5-0.md
index ab942372..a991dcc8 100644
--- a/content/momentum/changelog/5/5-0.md
+++ b/content/momentum/changelog/5/5-0.md
@@ -1,7 +1,7 @@
---
lastUpdated: "03/01/2025"
title: "Momentum 5.0 Changelog"
-description: "Momentum 5.0 was released on 2024-03-01. 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"
+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"
---
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
diff --git a/content/momentum/changelog/5/5-1.md b/content/momentum/changelog/5/5-1.md
new file mode 100644
index 00000000..f9759f2c
--- /dev/null
+++ b/content/momentum/changelog/5/5-1.md
@@ -0,0 +1,17 @@
+---
+lastUpdated: "06/11/2025"
+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"
+---
+
+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
+
+
+
+| Type | Ticket | Description |
+| --- | --- | --- |
+| Fix | | |
+| Feature | TASK-6489 | Add IPv6 support to rbldnsd RBL lookups performed with the msys.pbp module |
+| Feature | TASK-2248 | Add IPv6 support to mail_loop module |
+| Feature | TASK-6411 | Add IPv6 support to url_ripper module |
+| Feature | TASK-6411 | Add IPv6 support to auth_radius module |
diff --git a/content/momentum/changelog/5/index.md b/content/momentum/changelog/5/index.md
index ccc90d14..c58ad108 100644
--- a/content/momentum/changelog/5/index.md
+++ b/content/momentum/changelog/5/index.md
@@ -1,5 +1,5 @@
---
-lastUpdated: "03/01/2025"
+lastUpdated: "06/11/2025"
title: "Category File"
type: "custom"
name: "Momentum 5.x Changelogs"
@@ -7,3 +7,4 @@ description: "Momentum 5.x Changelogs"
---
* [Momentum 5.0 Changelogs](/momentum/changelog/5/5-0)
+* [Momentum 5.1 Changelogs](/momentum/changelog/5/5-1)
diff --git a/content/momentum/navigation.yml b/content/momentum/navigation.yml
index dba66c3f..b39e3ffc 100644
--- a/content/momentum/navigation.yml
+++ b/content/momentum/navigation.yml
@@ -1969,6 +1969,8 @@
- 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/4