diff --git a/README.md b/README.md
index 98bcc91..480f2d6 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ This configuration is intended to be used with a [mailu](https://git.autonomic.z
 This configuration assumes the following:
 
 - you have a correctly configured mailu instance (e.g. `mail.example.com`)
-- you have a relay domain setup on your mailu side which relays mails (e.g. `lists.example.com`)
+- you have a relay domain setup on your mailu side which relays mails (e.g. `lists.example.com` and the remote host is your `mailman-core` service hostname, see following setups below for more on the shared network configuration)
 - you have an MX and an SPF record setup on your `lists.example.com` for incoming mail
 - you have overlay networks configured for both your mailu and mailman stacks (see `SMTP_HOST` and `SMTP_NETWORK` in the [.env.sample](./.env.sample) on the mailman side and `MAILMAN_CORE_NETWORK` [in the mailu config](https://git.autonomic.zone/coop-cloud/mailu/src/branch/main/.env.sample) on the mailu side)
 - you have a shared volume between your mailman and mailu stack which exposes the mailman generated aliases which can be fed into an postfix override on the mailu side (see `MAILMAN_CORE_VOLUME` [in the mailu config](https://git.autonomic.zone/coop-cloud/mailu/src/branch/main/.env.sample) on the mailu side)