MDaemon Email Server software for Windows supports IMAP, SMTP, and POP3 protocols and delivers solid performance from its feature-rich and user-friendly design. It has been used by businesses in over 90 countries and over 25 languages worldwide. A trusted alternative to Microsoft Exchange, the MDaemon mail server software provides outstanding groupware features, integration with Microsoft Outlook (using Outlook Connector for MDaemon) and a multi-language webmail client for email access anywhere. The mail server software provides secure, standards-compliant and low total cost of ownership (TCO) features for small-to-medium-sized businesses in multiple languages, while supporting mailing lists, content filtering, multiple domain support, flexible administration, and an open standards design for mobile access. The MDaemon mail server software is a leader in email security using a layered approach (with SecurityPlus for MDaemon) offering proactive protection against email-borne threats of spam, viruses, and phishing. MDaemon mail server software uses the advanced email authentication techniques of Vouch By Reference (VBR) and validates and signs messages using DKIM, DK, Sender-ID, and SPF.