Sendmail isn't your father;'s SMTP server. Sentrion is a fairly sophisticated messaging server that has wide-ranging policy management for data leak protection, message encryption, email sender reputation, and message routing purposes.

Price: Less than $13 per user, with a minimum of 1000 users.
Pros:
• Very complex message routing processes can be constructed for a wide variety of purposes
• Compliance and governance can be built into messaging infrastructure
• Sendmail is a leading email server software and supports a large number of third-party applications

Cons:
• Still some integration into a single Web server for management purposes
• Policies can be fairly complex and require careful debugging

Sendmail Inc.
6475 Christie Ave., Suite 350
Emeryville, CA 94608
510-594-5400
http://sendmail.com