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< h1 id = "server-notices" > < a class = "header" href = "#server-notices" > Server Notices< / a > < / h1 >
< p > 'Server Notices' are a new feature introduced in Synapse 0.30. They provide a
channel whereby server administrators can send messages to users on the server.< / p >
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< p > They are used as part of communication of the server polices (see
< a href = "consent_tracking.html" > Consent Tracking< / a > ), however the intention is that
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they may also find a use for features such as " Message of the day" .< / p >
< p > This is a feature specific to Synapse, but it uses standard Matrix
communication mechanisms, so should work with any Matrix client.< / p >
< h2 id = "user-experience" > < a class = "header" href = "#user-experience" > User experience< / a > < / h2 >
< p > When the user is first sent a server notice, they will get an invitation to a
room (typically called 'Server Notices', though this is configurable in
< code > homeserver.yaml< / code > ). They will be < strong > unable to reject< / strong > this invitation -
attempts to do so will receive an error.< / p >
< p > Once they accept the invitation, they will see the notice message in the room
history; it will appear to have come from the 'server notices user' (see
below).< / p >
< p > The user is prevented from sending any messages in this room by the power
levels.< / p >
< p > Having joined the room, the user can leave the room if they want. Subsequent
server notices will then cause a new room to be created.< / p >
< h2 id = "synapse-configuration" > < a class = "header" href = "#synapse-configuration" > Synapse configuration< / a > < / h2 >
< p > Server notices come from a specific user id on the server. Server
administrators are free to choose the user id - something like < code > server< / code > is
suggested, meaning the notices will come from
< code > @server:< your_server_name> < / code > . Once the Server Notices user is configured, that
user id becomes a special, privileged user, so administrators should ensure
that < strong > it is not already allocated< / strong > .< / p >
< p > In order to support server notices, it is necessary to add some configuration
to the < code > homeserver.yaml< / code > file. In particular, you should add a < code > server_notices< / code >
section, which should look like this:< / p >
< pre > < code class = "language-yaml" > server_notices:
system_mxid_localpart: server
system_mxid_display_name: " Server Notices"
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system_mxid_avatar_url: " mxc://example.com/oumMVlgDnLYFaPVkExemNVVZ"
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room_name: " Server Notices"
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room_avatar_url: " mxc://example.com/oumMVlgDnLYFaPVkExemNVVZ"
room_topic: " Room used by your server admin to notice you of important information"
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auto_join: true
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< / code > < / pre >
< p > The only compulsory setting is < code > system_mxid_localpart< / code > , which defines the user
id of the Server Notices user, as above. < code > room_name< / code > defines the name of the
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room which will be created, < code > room_avatar_url< / code > its avatar and < code > room_topic< / code > its topic.< / p >
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< p > < code > system_mxid_display_name< / code > and < code > system_mxid_avatar_url< / code > can be used to set the
displayname and avatar of the Server Notices user.< / p >
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< p > < code > auto_join< / code > will autojoin users to the notices room instead of sending an invite.< / p >
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< h2 id = "sending-notices" > < a class = "header" href = "#sending-notices" > Sending notices< / a > < / h2 >
< p > To send server notices to users you can use the
< a href = "admin_api/server_notices.html" > admin_api< / a > .< / p >
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