Weasel is a mail server supporting the POP3 and SMTP protocols. You need a mail server if you want to set up your computer to accept mail for multiple users. The SMTP component sends and receives the mail, and the POP3 component lets users log in and fetch the mail that has arrived for them.

An e-mail server would not be complete without some sort of junk mail control. Weasel allows you to reject mail from a specified list of hosts, and it lets you specify which hosts are allowed to relay mail via your machine. It also lets you define your own filters. You could, for example, write a Rexx script that rejected mail that contained certain keywords.

Username aliases are supported, and you can create an alias that will expand out to a mixture of local and non-local addresses.

Configuration of the server is easy. You have the choice between a traditional text-based Setup program or a PM-based one. You can also do remote configuration.

The package includes some migration utilities, including a program to fetch mail from another POP server and store it in the Weasel mailboxes.

Weasel comes in two versions:

• Weasel Standard (supports one mail domain)
• Weasel Pro (supports multiple mail domains).

The same downloadable file is used for both versions, the "Pro" features are activated once you enter a valid registration code.