git subrepo clone https://github.com/mailcow/mailcow-dockerized.git mailcow/src/mailcow-dockerized

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "a832becb"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "a832becb"
git-subrepo: version:  "0.4.3"
  origin:   "???"
  commit:   "???"
Change-Id: If5be2d621a211e164c9b6577adaa7884449f16b5
diff --git a/mailcow/src/mailcow-dockerized/data/conf/postfix/smtp_dsn_filter b/mailcow/src/mailcow-dockerized/data/conf/postfix/smtp_dsn_filter
new file mode 100644
index 0000000..2fb5101
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/conf/postfix/smtp_dsn_filter
@@ -0,0 +1,6 @@
+/^4(\.\d+\.\d+ TLS is required, but host \S+ refused to start TLS: .+)/
+        5$1
+/^4(\.\d+\.\d+ TLS is required, but was not offered by host .+)/
+        5$1
+/^4.7.5(.*)/
+        5.7.5$1