diff --git a/README.md b/README.md
index a3477b6..83364fe 100644
--- a/README.md
+++ b/README.md
@@ -11,9 +11,15 @@ The adapter is configured via environment variables:
 - `USERLI_TOKEN`: The token to authenticate against the userli API.
 - `USERLI_BASE_URL`: The base URL of the userli API.
 - `ALIAS_LISTEN_ADDR`: The address to listen on for incoming requests. Default: `10001`.
+- `DOMAIN_LISTEN_ADDR`: The address to listen on for incoming requests. Default: `10002`.
+- `MAILBOX_LISTEN_ADDR`: The address to listen on for incoming requests. Default: `10003`.
+- `SENDERS_LISTEN_ADDR`: The address to listen on for incoming requests. Default: `10004`.
 
 In Postfix, you can configure the adapter as a transport like this:
 
 ```text
 virtual_alias_maps = tcp:localhost:10001
+virtual_mailbox_domains = tcp:localhost:10002
+virtual_mailbox_maps = tcp:localhost:10003
+smtpd_sender_login_maps = tcp:localhost:10004
 ```