feed.rss is a snapshot of

  http://rss.gmane.org/gmane.mail.rss2email

as of 2012-11-18.

HTTP headers:

  HTTP/1.1 200 OK
  Date: Sun, 18 Nov 2012 14:01:35 GMT
  Server: Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny6 with Suhosin-Patch
  Last-Modified: Sun, 18 Nov 2012 02:55:19 GMT
  ETag: "9209e0-161b-4cebc218e73c0"
  Accept-Ranges: bytes
  Content-Length: 5659
  Vary: Accept-Encoding
  Keep-Alive: timeout=5, max=2
  Connection: Keep-Alive
  Content-Type: text/xml