Macallan Mail Solution - Mail Server for Windows
Free Mail Server
Macallan Mail Solution is a Freeware Mail Server (SMTP/POP3/IMAP/HTTP/NEWS/SSL/Tunnel) for:
Microsoft Windows 7 ™ (32bits and 64bits versions),
Microsoft Windows Server 2008 R2 ™ (64bits version),
Microsoft Windows 8 ™ (64bits version),
Microsoft Windows 8.1 ™ (64bits version),
Microsoft Windows Server 2012 ™ (64bits version),
Microsoft Windows 10™ (64bits version).

It works with clients such as Microsoft Outlook Express™, Microsoft Outlook™ and Mozilla Thunderbird (that I use).
It manage local Mails and eMails, incoming eMails from the Internet and outgoing eMails to external mail addresses.
Other mail clients may work.

Filtering mechanisms against Spammers using DNSBL (DNS Black List) and your own Keywords Black List / Friend List are included. Mechanisms against Virus can be used with your Anti-Virus.
Replies can be sent automatically for those abusing Spams and Virus to providers. SpamAssassin can be used.

Normally all POP3 Clients should work.

PHP is supported thru IMAP functions. Functions as imap_open, imap_listmailbox, imap_headers, imap_fetch_overview, imap_body, imap_fetchbody, imap_close have been partially tested. Other functions may normally work.

Secure Socket Layer (SSL) and Transport Layer Security (TLS) are supported thru OpenSSL libraries.

The local SMTP and the local POP3 accounts are limited to 1024. The number of external accounts collected using the retriever is not limited (except by program capacity). There is no time or features limitation. If you need more accounts send me an email.

The program has been tested with 1700 simulated concurrent POP3 users on a Pentium P4 2.4 GHz 512 Mb running Windows NT 2000 Server (A long time ago).
But the suitable range of concurrent users is more likely 100 to 400 concurrent users. (My home computers description).

Functions Description

POP3 Client Supported All POP3 clients should be
Authentication A POP, LOGIN, PLAIN,

IMAP CLients Supported  
Microsoft Outlook
Microsoft Outlook Express
Mozilla ThunderBird
iPhone IMAP mail Client
Sparrow Mail
Windows Phone 8 Mail
Authentication LOGIN, PLAIN, CRAM-MD5,

WebMail Supported  

SMTP Receiver Features  
Authentication NONE, LOGIN, PLAIN

SMTP Mailer Features  
Authentication NONE, LOGIN, PLAIN

News Server (NNTP) Support Feeding

Tunnel TCP/IP Tunnel with or without SSL.
Socks5 Server.
Socks4 (Socks4a) Server.

Secure Socket Layer Thru OpenSSL

  White List, Black List
  DNS Black List(DNSBL)
  Reply to Providers of SPAM
SpamAssassin can be used

  Antivirus Launch on messages
  Message attachment types

Filtering can be done on Country

The supported protocols are :
  • SMTP for the sending and receiving of mail messages
  • POP3, IMAP and HTTP for the clients mailboxes.
  • POP3/IMAP4 Client for mail retrieval from external pop3/imap4 servers.
  • NNTP Clients for the News Server.
  • TCP/IP for the Tunnel
  • SSL TLS v1.3 With OpenSSL

Spammers are detected using keywords and messages are put apart, to be treated by an Anti-Spam process.

The SMTP Server also uses DnsBL (Dns Black List) functions to identify Spammers.

sorbs SpamCop Spamhaus ROKSO db SBL
openrbl dsbl ORDB  
See other information on DnsBL at or on Icons.

An advanced Anti-Spam mechanism is provided.

Antivirus can be used to scan messages if they provide a command line tool.

I now use ClamAV (the an open source GPL AntiVirus) under Windows.

SquirrelMail - Webmail for Nuts

With some modifications SquirrelMail can work as a WebMail client with Macallan Mail Solution.
Setting Squirrel Mail for Windows XP is detailed at
The settings are also described here.

Personally I now use SquirrelMail.

The program has been tested with versions of SquirrelMail 1.4.3a to 1.4.9a (the version I use).

SpamAssassin On Windows

Macallan Mail Solution is now able to use SpamAssassin as a Spam Filter.

Information on SpamAssassin can be found at
Those settings are also described here.

Even if the SpamAssassin is a little slower than my integrated Spam Control
I now use SpamAssassin.

The program has been tested with SpamAssassin 3.0.2 to version 3.1.0.
I am now using the precompiled version (3.1.7) available at

Problems Fixed & New functions
Versions Description Support OpenSSL 3.0.8  


It is highly recommended to always use the latest version since it contains enhancements and correction.

A certificate file exists that you can install in your trusted certificates to avoid some messages : Root Certificate.
All program files and libraries are signed using this Root Certificate.
Current Versions
Description Download
Last Current
Size   Download
Last Beta
Macallan Mail Solution - Server x86 (32 Bits) MMSWixSetupx86.msi 32 Mb   MMSWixSetupx86.msi
Macallan Mail Solution - Server x64 (64 Bits) MMSWixSetupx64.msi 32 Mb   MMSWixSetupx64.msi
Macallan Mail Solution - Help File MMSHelp.7z 1 Mb    


Privacy Policies
There is nothing collected when you use Macallan Mail Solution.
The software is installed on your own computers.
You can ise this sofware as is.
Google Privacy Policies :
Download Referenced Sites

You can find Sites where this software is referenced.

MMS Logo
If you want to link my site,
you can use this logo I have
done in a couple of hours.
Last Updated: Feb, 18 - 2023 - © 2003-2023 By Macallan