Merge branch 'develop' of https://github.com/technicalguru/docker-mailserver-opendkim into develop

Author: technicalguru

README.md

@@ -63,7 +63,7 @@ Once you have started your OpenDKIM container successfully, it is now time to cr
 1. For each of your domains `DOMAIN` perform the following steps:
     1. Create a temporary directory: `mkdir /etc/opendkim/keys/$DOMAIN`
     2. Create the actual key: `opendkim-genkey -b 2048 -d $DOMAIN -D /etc/opendkim/keys/$DOMAIN -s default -v`. You will find public and private key in the temporary directory.
-    3. Insert public and private key into your database by signing in: `mysql -u opendkim -p opendkim` and enter your database password.
+    3. Insert public and private key into your database by signing in: `mysql -u opendkim -p opendkim` (*) and enter your database password.
        Then enter these SQL statement and hit enter for each of them:
 
         ```
@@ -74,6 +74,8 @@ Once you have started your OpenDKIM container successfully, it is now time to cr
         INSERT INTO `internal_hosts` (`hostname`) VALUES ('*@$DOMAIN');
         ```
 
+       (*) You might need to add the parameter ``-h mailserver-database`` when using the docker-compose environment. 
+
     4. Insert the *Public Key* as described by step 2 output into your DNS TXT record for the domain. It can look like this:
 
         ```