diff --git a/matrix/synapse/README.md b/matrix/synapse/README.md
index c52cb0a..fa8482b 100644
--- a/matrix/synapse/README.md
+++ b/matrix/synapse/README.md
@@ -183,40 +183,6 @@ and/or AAAA records in DNS, not CNAME.
 See [nginx](../nginx) for details about how to publish this data.
 
 
-# Blacklists
-
-You don't want Synapse to try to contact certain IP-addresses, especially not
-those that are unroutable or for special uses. Add these addresses to `ip_range_blacklist`,
-in `conf.d/ip_range_blacklist.yaml`:
-
-```
-ip_range_blacklist:
-  - '127.0.0.0/8'
-  - '10.0.0.0/8'
-  - '172.16.0.0/12'
-  - '192.168.0.0/16'
-  - '100.64.0.0/10'
-  - '192.0.0.0/24'
-  - '169.254.0.0/16'
-  - '192.88.99.0/24'
-  - '198.18.0.0/15'
-  - '192.0.2.0/24'
-  - '198.51.100.0/24'
-  - '203.0.113.0/24'
-  - '224.0.0.0/4'
-  - '::1/128'
-  - 'fe80::/10'
-  - 'fc00::/7'
-  - '2001:db8::/32'
-  - 'ff00::/8'
-  - 'fec0::/10'
-```
-
-You want to add addresses of malicious or otherwise unwanted machines to this
-list too. See [Synapse's documentation](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html?highlight=ip_range_blacklist#ip_range_blacklist)
-for more information.
-
-
 # E-mail {#Email}
 
 Synapse should probably be able to send out e-mails; notifications for those
@@ -307,7 +273,7 @@ Logging in can be done in basically two ways: an internal or external
 database. Let's start with the first: users and their passwords are stored in
 Synapse's database.
 
-We use `conf.d/signon.yaml` to configure this stuff.
+We use `conf.d/authentication.yaml` to configure this stuff.
 
 ```
 password_config:
@@ -358,5 +324,48 @@ live under `ou=users,o=Example,dc=example,dc=com` and that are active Posix
 accounts. Users will not be able to change their passwords via Matrix, they
 have to do that in LDAP.
 
-(this setup has not been tested, although it borrows heavily from the current
-ProcoliX setup).
+
+# Server configuration {#serverconfig}
+
+See [Define your homeserver name and other base options](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html?highlight=require_auth_for_profile_requests#server)
+in the Synapse documentation.
+
+It would be logical to put the next options under `conf.d/server.yaml`, but
+Debian insists on `conf.d/server_name.yaml` existing and containing the name
+of the domain. So we'll use that file for the next options as well. Add these
+options:
+
+```
+presence:
+  enabled: true
+  include_offline_users_on_sync: false
+
+require_auth_for_profile_requests: true
+allow_public_rooms_over_federation: true
+
+ip_range_blacklist:
+  - '127.0.0.0/8'
+  - '10.0.0.0/8'
+  - '172.16.0.0/12'
+  - '192.168.0.0/16'
+  - '100.64.0.0/10'
+  - '192.0.0.0/24'
+  - '169.254.0.0/16'
+  - '192.88.99.0/24'
+  - '198.18.0.0/15'
+  - '192.0.2.0/24'
+  - '198.51.100.0/24'
+  - '203.0.113.0/24'
+  - '224.0.0.0/4'
+  - '::1/128'
+  - 'fe80::/10'
+  - 'fc00::/7'
+  - '2001:db8::/32'
+  - 'ff00::/8'
+  - 'fec0::/10'
+
+filter_timeline_limit: 500
+```
+
+These should be reasonable defaults, but do check the [Server block](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#server)
+in Synapse's documentation for more options and information.