hMailServer
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| Developer(s) | Martin Knafve |
|---|---|
| Initial release | 2002 |
| Stable release | 5.3.3 (Build 1879) / June 7, 2010 |
| Preview release | 5.4 beta (Build 1931) / August 21, 2011 |
| Written in | C++, C# |
| Operating system | Microsoft Windows 2000/XP/2003/Vista/2008 (v4.0/v5.0) |
| Platform | Windows |
| Type | Mail transfer agent |
| License | up to v4: Open source, v5: Closed source (Now open source) |
| Website | http://www.hmailserver.com |
hMailServer is a free email server for Windows created by Martin Knafve. It runs as a Windows service and includes administration tools for management and backup. It has support for IMAP, POP3, and SMTP email protocols. It uses database engines (MySQL, MS SQL or PostgreSQL) to store configuration and index data but the actual email messages are stored on disk in a raw MIME format. It has active support and development forums.
Common features such as multiple-domain support, aliases, catch-all and basic mailing lists are present. Users can be authenticated both against the local hMailServer user system and against an external Active Directory. Using a voting system on the hMailServer web site, the hMailServer users decide which features should be implemented in the software.
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[edit] AntiSpam
hMailServer offers a number of different AntiSpam mechanisms:
- Host based DNS Blacklisting (DNSBL)
- URL based DNS blacklisting (SURBL)
- Greylisting (must retry sending for the message to succeed)
- SPF
- Built in SpamAssassin integration
- DKIM (in version 5.1)
[edit] AntiVirus
hMailServer has built in support for ClamWin/ClamAV. It's possible to execute any command line virus scanner.
[edit] Other features
- Domain and account signatures (for legal and advertising footers)
- Server side rules (rules for individual accounts available in v5)
- Retrieval of messages from external POP3 accounts
- Quotas on domain, mailbox, and individual message sizes
- Plus addressing (using + to make a virtual alias for an account specific to a task, as seen in Gmail)
- Attachment blocking (based on attachment extension)
- Custom SMTP routes for specific domains (can be used to set up MX backup, forwarding and more)
- API (it's possible to write hMailServer scripts using VBScript and JScript)
- Built-in support for SSL
[edit] Integration
- ClamAV anti-virus software
- SquirrelMail for webmail, (requires IIS or Apache); spell-checking available
- Roundcube for webmail, also requires auxiliary database provider such as mySQL to operate
- SpamAssassin spam filtering
[edit] History
The hMailServer project was started in 2003. Up until 2008 and version 4, the project was open source software. Version 5 and later is closed source.
