Add mail server setup scripting.

[config] / buster / etc_files / mail / etc / dovecot / conf.d / 99-lmtp-sieve-filtering.conf

diff --git a/buster/etc_files/mail/etc/dovecot/conf.d/99-lmtp-sieve-filtering.conf b/buster/etc_files/mail/etc/dovecot/conf.d/99-lmtp-sieve-filtering.conf
new file mode 100644 (file)
index 0000000..eaf927b
--- /dev/null
+++ b/buster/etc_files/mail/etc/dovecot/conf.d/99-lmtp-sieve-filtering.conf
@@ -0,0 +1,18 @@
+# This is only necessary when we use dovecot's LMTP mechanism to receive
+# mail from postfix.
+auth_username_format = %Ln
+
+# Add sieve filtering.
+protocol lmtp {
+  mail_plugins = $mail_plugins sieve
+}
+
+# We don't strictly need to provide a LMTP server to fetch mail from
+# postfix, but we do if we want to do sophisticated stuff like sieve
+# filtering on the way.
+service lmtp {
+  inet_listener lmtp {
+    address = 127.0.0.1
+    port = 2424
+  }
+}