Smartermail 6919 Exploit Link

Audit server logs for unusual activity, as this vulnerability is known to have been exploited in the wild.

SmarTemail, Inc. has released a patch for SmarterMail version 6919 and earlier. To mitigate the vulnerability, administrators are urged to: smartermail 6919 exploit

If you are running (including all 16.x, 15.x, and early 100.x builds), you are vulnerable. Audit server logs for unusual activity, as this