Bruteblock allows system administrators blocking various bruteforce attacks on FreeBSD services. This program analyzes system logs and adds attacker's IP into IPFW firewall.
Short tutorial how to install and configure Redmine as FastCGI for Apache in FreeBSD.
This is the best solution for servers where their configuration does not allow you to send emails directly.
The simplest way of sending emails by using another SMTP is the using of sSMTP program. In this case with Gmail SMTP.