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mpop can be compiled to a DOS executable using DJGPP (http://www.delorie.com/djgpp/)

To run the DOS executable, you need a DPMI server and an installed Watt32 library from http://www.bgnett.no/~giva/ .

Differences between the UNIX and DOS versions

• The default user configuration file is "$HOME/_mpoprc".
• The default uidls file is "$HOME/_uidls".
• The .netrc file is "$HOME/_netrc"
• The maildir delivery method will only work on systems with long filename support.

Notes on TLS/SSL with OpenSSL on DOS

You need OpenSSL compiled with DJGPP (GnuTLS is not available for DOS as far as I know). Add something like

        LDFLAGS="-Lc:/dos-openssl/lib" \
        CPPFLAGS="-Ic:/dos-openssl/include" \

to the configure command line.

OpenSSL needs some truly random data to seed its pseudo random number generator (PRNG). It is therefore recommended to install the driver NOISE.SYS from http://www.rahul.net/dkaufman/index.html . It may even be necessary.

Compiling the source

To compile mpop, you need:
- A DOS with LFN (long file name) support. - DJGPP with bash, fileutils, shellutils, sed, grep, and gawk. The utilities are needed to run the configure script. - The Watt32 networking library for DOS from http://www.bgnett.no/~giva/ The library should be available as libsocket.a in the DJGPP lib directory (as is suggested in the Watt32 docs).