Hi Derek. My company, Mail's Best Friend, specializes in resolving issues such as these. If you are interested in having us take a look at your mail server, I will be happy to give you a free assessment. Please reach out to me directly at the email address in my signature so we can exchange details. Thanks.
Linda Pagillo
Mail's Best Friend
Email: linda.pagillo@mailsbestfriend.com
Web: www.mailsbestfriend.com
Office: 703.988.3606
Authorized Reseller of SmarterTools Products
Authorized Reseller of Message Sniffer