msmtp: Require valid certificate, rather than pinning by fingerprint
msmtp: Require valid certificate, rather than pinning by fingerprint

This avoid dealing with changed fingerprints when we renew certificates.

hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc,hashbang/shell-etc