diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 493ea9ee9e..4d7e6f3eb5 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -91,7 +91,7 @@ pid_file: DATADIR/homeserver.pid
# For example, for room version 1, default_room_version should be set
# to "1".
#
-#default_room_version: "1"
+#default_room_version: "4"
# The GC threshold parameters to pass to `gc.set_threshold`, if defined
#
@@ -261,6 +261,22 @@ listeners:
# Monthly Active User Blocking
#
+# Used in cases where the admin or server owner wants to limit to the
+# number of monthly active users.
+#
+# 'limit_usage_by_mau' disables/enables monthly active user blocking. When
+# anabled and a limit is reached the server returns a 'ResourceLimitError'
+# with error type Codes.RESOURCE_LIMIT_EXCEEDED
+#
+# 'max_mau_value' is the hard limit of monthly active users above which
+# the server will start blocking user actions.
+#
+# 'mau_trial_days' is a means to add a grace period for active users. It
+# means that users must be active for this number of days before they
+# can be considered active and guards against the case where lots of users
+# sign up in a short space of time never to return after their initial
+# session.
+#
#limit_usage_by_mau: False
#max_mau_value: 50
#mau_trial_days: 2
@@ -313,12 +329,12 @@ listeners:
#
#tls_private_key_path: "CONFDIR/SERVERNAME.tls.key"
-# Whether to verify TLS certificates when sending federation traffic.
+# Whether to verify TLS server certificates for outbound federation requests.
#
-# This currently defaults to `false`, however this will change in
-# Synapse 1.0 when valid federation certificates will be required.
+# Defaults to `true`. To disable certificate verification, uncomment the
+# following line.
#
-#federation_verify_certificates: true
+#federation_verify_certificates: false
# Skip federation certificate verification on the following whitelist
# of domains.
@@ -936,12 +952,43 @@ signing_key_path: "CONFDIR/SERVERNAME.signing.key"
# The trusted servers to download signing keys from.
#
-#perspectives:
-# servers:
-# "matrix.org":
-# verify_keys:
-# "ed25519:auto":
-# key: "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw"
+# When we need to fetch a signing key, each server is tried in parallel.
+#
+# Normally, the connection to the key server is validated via TLS certificates.
+# Additional security can be provided by configuring a `verify key`, which
+# will make synapse check that the response is signed by that key.
+#
+# This setting supercedes an older setting named `perspectives`. The old format
+# is still supported for backwards-compatibility, but it is deprecated.
+#
+# Options for each entry in the list include:
+#
+# server_name: the name of the server. required.
+#
+# verify_keys: an optional map from key id to base64-encoded public key.
+# If specified, we will check that the response is signed by at least
+# one of the given keys.
+#
+# accept_keys_insecurely: a boolean. Normally, if `verify_keys` is unset,
+# and federation_verify_certificates is not `true`, synapse will refuse
+# to start, because this would allow anyone who can spoof DNS responses
+# to masquerade as the trusted key server. If you know what you are doing
+# and are sure that your network environment provides a secure connection
+# to the key server, you can set this to `true` to override this
+# behaviour.
+#
+# An example configuration might look like:
+#
+#trusted_key_servers:
+# - server_name: "my_trusted_server.example.com"
+# verify_keys:
+# "ed25519:auto": "abcdefghijklmnopqrstuvwxyzabcdefghijklmopqr"
+# - server_name: "my_other_trusted_server.example.com"
+#
+# The default configuration is:
+#
+#trusted_key_servers:
+# - server_name: "matrix.org"
# Enable SAML2 for registration and login. Uses pysaml2.
@@ -1018,10 +1065,8 @@ password_config:
-# Enable sending emails for notification events or expiry notices
-# Defining a custom URL for Riot is only needed if email notifications
-# should contain links to a self-hosted installation of Riot; when set
-# the "app_name" setting is ignored.
+# Enable sending emails for password resets, notification events or
+# account expiry notices
#
# If your SMTP server requires authentication, the optional smtp_user &
# smtp_pass variables should be used
@@ -1029,22 +1074,64 @@ password_config:
#email:
# enable_notifs: false
# smtp_host: "localhost"
-# smtp_port: 25
+# smtp_port: 25 # SSL: 465, STARTTLS: 587
# smtp_user: "exampleusername"
# smtp_pass: "examplepassword"
# require_transport_security: False
# notif_from: "Your Friendly %(app)s Home Server <noreply@example.com>"
# app_name: Matrix
-# # if template_dir is unset, uses the example templates that are part of
-# # the Synapse distribution.
+#
+# # Enable email notifications by default
+# notif_for_new_users: True
+#
+# # Defining a custom URL for Riot is only needed if email notifications
+# # should contain links to a self-hosted installation of Riot; when set
+# # the "app_name" setting is ignored
+# riot_base_url: "http://localhost/riot"
+#
+# # Enable sending password reset emails via the configured, trusted
+# # identity servers
+# #
+# # IMPORTANT! This will give a malicious or overtaken identity server
+# # the ability to reset passwords for your users! Make absolutely sure
+# # that you want to do this! It is strongly recommended that password
+# # reset emails be sent by the homeserver instead
+# #
+# # If this option is set to false and SMTP options have not been
+# # configured, resetting user passwords via email will be disabled
+# #trust_identity_server_for_password_resets: false
+#
+# # Configure the time that a validation email or text message code
+# # will expire after sending
+# #
+# # This is currently used for password resets
+# #validation_token_lifetime: 1h
+#
+# # Template directory. All template files should be stored within this
+# # directory
+# #
# #template_dir: res/templates
+#
+# # Templates for email notifications
+# #
# notif_template_html: notif_mail.html
# notif_template_text: notif_mail.txt
-# # Templates for account expiry notices.
+#
+# # Templates for account expiry notices
+# #
# expiry_template_html: notice_expiry.html
# expiry_template_text: notice_expiry.txt
-# notif_for_new_users: True
-# riot_base_url: "http://localhost/riot"
+#
+# # Templates for password reset emails sent by the homeserver
+# #
+# #password_reset_template_html: password_reset.html
+# #password_reset_template_text: password_reset.txt
+#
+# # Templates for password reset success and failure pages that a user
+# # will see after attempting to reset their password
+# #
+# #password_reset_template_success_html: password_reset_success.html
+# #password_reset_template_failure_html: password_reset_failure.html
#password_providers:
|