diff --git a/crates/common/src/config/inner.rs b/crates/common/src/config/inner.rs
index 6e0f1ad..b851e26 100644
--- a/crates/common/src/config/inner.rs
+++ b/crates/common/src/config/inner.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use super::server::tls::build_self_signed_cert;
diff --git a/crates/common/src/network/listen.rs b/crates/common/src/network/listen.rs
index 65d1231..516f68f 100644
--- a/crates/common/src/network/listen.rs
+++ b/crates/common/src/network/listen.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use super::{
diff --git a/crates/common/src/network/mod.rs b/crates/common/src/network/mod.rs
index b4db05c..1d61319 100644
--- a/crates/common/src/network/mod.rs
+++ b/crates/common/src/network/mod.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use self::limiter::{ConcurrencyLimiter, InFlight};
diff --git a/crates/http-proto/src/response.rs b/crates/http-proto/src/response.rs
index 6a19bf8..72d8399 100644
--- a/crates/http-proto/src/response.rs
+++ b/crates/http-proto/src/response.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use common::manager::application::Resource;
diff --git a/crates/main/src/main.rs b/crates/main/src/main.rs
index f44e44f..646f810 100644
--- a/crates/main/src/main.rs
+++ b/crates/main/src/main.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 #![warn(clippy::large_futures)]
diff --git a/crates/smtp/src/inbound/session.rs b/crates/smtp/src/inbound/session.rs
index 400b3bb..3319f57 100644
--- a/crates/smtp/src/inbound/session.rs
+++ b/crates/smtp/src/inbound/session.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use common::{
diff --git a/crates/spam-filter/src/modules/classifier.rs b/crates/spam-filter/src/modules/classifier.rs
index 65fc21a..04b92f3 100644
--- a/crates/spam-filter/src/modules/classifier.rs
+++ b/crates/spam-filter/src/modules/classifier.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use crate::analysis::domain::SpamFilterAnalyzeDomain;
diff --git a/crates/trc/src/ipc/collector.rs b/crates/trc/src/ipc/collector.rs
index 1e3f1fb..0b30de3 100644
--- a/crates/trc/src/ipc/collector.rs
+++ b/crates/trc/src/ipc/collector.rs
@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <hello@stalw.art>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use std::{