ftp://eepjm.newcastle.edu.au/Weasel/weasel1704.zip
Web Site
http://eepjm.newcastle.edu.au/os2/weasel.html
" 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."