Synapse will be hosted at `matrix.matrix.wmflabs.org` but just `matrix.wmflabs.org` would be a nicer username postfix. There are two ways to achieve that:

- serve a
`https://matrix.wmflabs.org/.well-known/matrix/server`file, with`Content-Type: application/json`and`Access-Control-Allow-Origin: *`headers, with the content`{ "m.server": "matrix.matrix.wmflabs.org" }`(alternatively, just redirect`https://matrix.wmflabs.org/.well-known/matrix`to`https://matrix.matrix.wmflabs.org/.well-known/matrix` - create an SRV record at
`_matrix._tcp.matrix.wmflabs.org.`with the value`10 0 8448 matrix.matrix.wmflabs.org`

For more details see here.

Neither option seems available for the project admin so I would appreciate help with it. The preferable approach would be redirecting `https://matrix.wmflabs.org/.well-known/matrix` (or maybe just a CNAME from matrix.matrix.wmflabs.org to matrix.wmflabs.org if that doesn't mess up things too much) from my perspective, as that's useful for other things as well (e.g. a not absolutely necessary but useful thing to do would be serving `https://matrix.wmflabs.org/.well-known/matrix/client`).