Also preserve the Chat-Is-Post-Message header

Aggressive LMTP header cleanup
This will remove all headers possible during LMTP delivery. From header: required or clients do not process the message correctly Message-Id header: required for clients to know which messages have been downloaded
2026-05-10 16:04:37 +00:00 · 2026-01-21 12:23:19 -08:00 · 2026-01-20 15:25:31 -08:00
1 changed files with 4 additions and 2 deletions
--- a/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup
+++ b/cmdeploy/src/cmdeploy/postfix/lmtp_header_cleanup
@@ -1,2 +1,4 @@
-/^DKIM-Signature:/            IGNORE
-/^Authentication-Results:/            IGNORE
+/^From:/            DUNNO
+/^Message-Id:/      DUNNO
+/^Chat-Is-Post-Message:/      DUNNO
+/.*/                IGNORE