In Azure Data Expert Ultimate 2.2.16, the SMTP verification function suffers from a buffer overflow vulnerability, leading to remote code execution. The attack vector is a crafted SMTP daemon that sends a long 220 (aka "Service ready") string.
https://www.exploit-db.com/exploits/41545/
http://www.securityfocus.com/bid/96824
http://packetstormsecurity.com/files/141502/Azure-Data-Expert-Ultimate-2.2.16-Buffer-Overflow.html