Cron Daemon emails

I've been receiving 2 emails every day:

Subject:

Cron <asterisk@freepbx> [ -x /var/lib/asterisk/agi-bin/update_license.php ] && /var/lib/asterisk/agi-bin/update_license.php --delay

Body:

hostname: Unknown host
hostname: Unknown host

and

Subject:

Cron <asterisk@freepbx> [ -x /var/lib/asterisk/bin/freepbx_sipstation_check ] && /var/lib/asterisk/bin/freepbx_sipstation_check

Body:

No key present, exiting

The first one I don't know what's up with that.
The second one even less, I don't use SIPSTATION