treewide: run update-copyrights from gnulib for 2019

[public-inbox.git] / examples / unsubscribe-milter@.service

diff --git a/examples/unsubscribe-milter@.service b/examples/unsubscribe-milter@.service
index 98e3d478c15d42e25e194ac113f08aaf26096fe7..eb5dcbe489c87c7eb883ae82ab57efa2eecd6d2d 100644 (file)
--- a/examples/unsubscribe-milter@.service
+++ b/examples/unsubscribe-milter@.service
@@ -14,6 +14,12 @@ After = unsubscribe-milter.socket
 # copy+paste errors
 # umask 077 && dd if=/dev/urandom bs=16 count=1 of=.unsubscribe.key
 ExecStart = /usr/local/sbin/unsubscribe.milter /home/mlmmj/.unsubscribe.key
+
+# UNIQUE_MAILTO makes the List-Unsubscribe mailto: header unique
+# so unsubcribing becomes one-step (requires MDA/MTA configuration,
+# see the bottom of examples/unsubscribe.milter
+# Environment = UNIQUE_MAILTO=1
+
 Sockets = unsubscribe-milter.socket
 
 # the corresponding PSGI app needs permissions to modify the