diff --git a/.dockerignore b/.dockerignore
index 35cdaf3..0b341f0 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,2 +1,3 @@
 .git
 README.md
+LICENSE
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f2794b4
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2016 Mattias Wadman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index d8418a9..a29985f 100644
--- a/README.md
+++ b/README.md
@@ -39,3 +39,7 @@ When sending using your own SMTP server it is probably a very good idea to setup
 To enable [DKIM](https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail) specifying a white space separated list of domains using `OPENDKIM_DOMAINS`. At conatiner start new key pairs for each domain will be generated if not found in `/etc/opendkim/keys/<domain>"`. To persist the keys make sure to add a host directory volume for `/etc/opendkim/keys`. If your using docker-compose it will automatically take care of moving data volumes between container recreates.
 
 DNS records to configure can be found in the container log or by running `docker exec -ti <container> sh -c "cat /etc/opendkim/keys/*/mail.txt"`.
+
+## License
+
+postfix-relay is licensed under the MIT license. See [LICENSE](LICENSE) for the full license text.