diff --git a/README.md b/README.md
index a08337c..6844038 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,11 @@ $ docker run  -e SMF_CONFIG="$SMF_CONFIG" -p 25:25 zixia/simple-mail-forwarder
 
 This will forward all emails received by testi@testo.com to test@test.com.
 
+If you want to forward all emails sent to domain testo.com to all@test.com, set it like so:
+```bash
+$ export SMF_CONFIG='@testo.com:all@test.com'
+```
+
 See? There is nothing easier. 
 
 Quick Test
@@ -99,6 +104,11 @@ Forward all emails received by testi@testo.com to test@test.com:
 ```bash
 $ export SMF_CONFIG='testi@testo.com:test@test.com'
 ```
+
+Forward all emails received by any email address in domain testo.com to all@test.com:
+```bash
+$ export SMF_CONFIG='@testo.com:all@test.com'
+```
 > You could get the ESMTP AUTH password for you on your docker log. It's randomly generated if you do not provide one.
 
 #### 2. Advanced
diff --git a/install/main.dist.cf b/install/main.dist.cf
index ac266d8..b39b6ad 100644
--- a/install/main.dist.cf
+++ b/install/main.dist.cf
@@ -737,5 +737,5 @@ smtpd_tls_exclude_ciphers =
 # openssl dhparam -2 -out dh_1024.pem 1024
 #smtpd_tls_dh512_param_file = ${config_directory}/cert/dh_512.pem
 #smtpd_tls_dh1024_param_file = ${config_directory}/cert/dh_1024.pem
-
+smtp_tls_security_level = may
 message_size_limit = 40960000