For a new server that will run an old application I need to install PHP 5.3.2 and MySQL 5.0.8 on a Debian 8. I have updated my server.list to add a 2010 repository of snapshot.debian.org and I have retrieved the missing PGP keys from pgp.mit.edu. But an update of the repositories still complain about expired keys:
W: GPG error: http://snapshot.debian.org lenny Release: The following signatures were invalid: KEYEXPIRED xxxxxxxxx KEYEXPIRED yyyyyyyyy
How can I update my list of repositories and then install the old version of PHP (and later MySQL) ?