From 915900d0c511c830cafed49196d77b97f0b3b0ea Mon Sep 17 00:00:00 2001
From: Maurus Decimus <11444311+mdecimus@users.noreply.github.com>
Date: Tue, 19 May 2026 17:20:03 +0200
Subject: [PATCH] Allow internal TLDs in e-mail addresses

---
 CHANGELOG.md            | 7 +++++--
 crates/utils/src/lib.rs | 4 +---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f1d264c..9e059703 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -75,10 +75,13 @@ If you are upgrading from v0.16.x, replace the binary (or run `docker pull`). If
 ## Fixed
 - DAV: `acl-principal-prop-set` REPORT enforced the wrong privilege.
 - JMAP: `Thread/get` did not filter by per-mailbox ACLs on shared accounts.
-- RFC2136 TSIG: regression related to multiplexer.
 - IMAP: `UID FETCH N:*` could miss messages moved into a SELECTed mailbox by another connection.
-- DNS records: Skip `v=spf1 a -all` records for apex domains.
+- DNS updater:
+  - Skip `v=spf1 a -all` records for apex domains.
+  - RFC2136 TSIG: regression related to multiplexer.
+  - Rout53: Chunk `TXT` records when they exceed 255 characters.
 - ACME: Update `defaultCertificateId` when renewing a certificate that is currently set as default.
+- Allow internal TLDs in e-mail addresses.
 
 ## [0.16.5] - 2026-05-11
 
diff --git a/crates/utils/src/lib.rs b/crates/utils/src/lib.rs
index 838aa0b6..82b627d2 100644
--- a/crates/utils/src/lib.rs
+++ b/crates/utils/src/lib.rs
@@ -275,9 +275,7 @@ pub fn sanitize_email(email: &str) -> Option<String> {
         last_ch = ch;
     }
 
-    if last_ch.is_alphanumeric()
-        && psl::domain(result.as_bytes()).is_some_and(|d| d.suffix().typ().is_some())
-    {
+    if last_ch.is_alphanumeric() && is_valid_domain(&result) {
         Some(result)
     } else {
         None