Could the certificate for the archive.xfce.org please be updated to fix the certificate errors below.

```
$ curl -I https://archive.xfce.org/
curl: (51) SSL: no alternative certificate subject name matches target host name 'archive.xfce.org'
$ curl -I https://tibeti.xfce.org/
HTTP/1.1 200 OK
Date: Tue, 10 Oct 2017 09:23:56 GMT
Server: Apache/2.4.10 (Debian)
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
Last-Modified: Sat, 31 Mar 2012 09:08:16 GMT
ETag: "e7-4bc864c2be4a4"
Accept-Ranges: bytes
Content-Length: 231
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8
````