Ya, nothing wrong with that format, can I start a ticket for you to get an RSAA and review your install? Or start the ticket to get a copy of the emails that are triggering that signature to test with.
SecuriteInfo.com.Spam-91973.UNOFFICIAL
YARA.SecuriteInfo_Suspicious_Phishing_Mail_3_2.UNOFFICIAL
Tony Scholz
System/Network Administrator
SmarterTools Inc.
www.smartertools.com