DynSite 

DynSite automatically updates your dynamic IP address each time it changes on one or many dynamic DNS or by email. This allows anyone to connect to the servers running on your own computer using a fully qualified domain name.
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extVIEW 

The extVIEW Active Directory View/Search Software for Intranets is a browser-based solution that makes viewing and searching Active Directory users and resources fast, easy, and accurate.
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MDaemon 

MDaemon , Windows-based email server software, contains full mail server functionality and control with a strong emphasis on security to protect your email communication needs. Security features include Greylisting, DKIM, DomainKeys (DK), and SPF.
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Express Plus 

Business email client can send personalized messages using mail merging, offers Bayesian SPAM and message filtering, shared mailboxes on a network, multiple address support and can read messages live on your server without downloading.
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ShareMailPro 

Unique feature which can extend one mailbox to unlimited numbers with your domain, you can add or remove mailboxes at any time. No extra payment to your ISP for the mailboxes you add, perfect solution for small business.
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Winmail Mail Server 

Winmail Server is an enterprise class mail server software system offering a robust feature set, including extensive security measures. Winmail Server supports SMTP, POP3, IMAP, Webmail, LDAP, multiple domains, SMTP authentication, spam protection
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