Iis smtp service software: DKIM for IIS SMTP Service and Exchange Server, Anti-spam tool for Exchange Server, A fast and easy SMTP server for group users and more.
With this tool, your IIS SMTP Service and Exchange Server will be enabled to add DomainKeys/DKIM signature to outgoing emails from specified domain(s), which verify the DNS domain of an email sender and the message integrity, and in turn preventing the emails from your domain from being flagged as spam or junk mail by email servers which have Domainkeys/DKIM implemented (such as Hotmail, Yahoo mail and Gmail).
With this tool, your IIS SMTP Service and Exchange Server will be enabled to add disclaimer and digital signature to outgoing emails from specified sender(s) or domain(s). Moreover, email encryption (with using the recipient's digital certificate) and S/MIME (Secure / Multipurpose Internet Mail Extensions) will become fully supported in your Exchange server.
ORF Enterprise Edition is an enterprise-level anti-spam solution that helps you to block spam before it reaches your network. ORF uses a combination of anti-spam technologies and custom filtering options to stop the spam on SMTP protocol level.
ORF can be used with Windows 2000's/2003's built-in IIS SMTP Service and Microsoft Exchange Servers (which use this service for SMTP communication).
