LambdaMail ========== This is an _extremely simple_ SMTP server designed specifically for running on personal servers with a very small number (~1) users. It is probably best defined in terms of what it does not support: - It does not (yet?) support TLS connections. - It does not relay messages between remote addresses. - It does not spawn threads to allow simultaneous inbound connections. - It does not respond with honest errors on failed deliveries. Apart from the lack of TLS, I consider these features. There's no (obvious) way for LambdaMail to become a source of spam, the lack of multithreaded operation is a built-in rate limiter (not to mention its side effect of making all delivery operations "atomic"), and its penchant for just responding "250 OK" to almost everything means that it doesn't leak information about users on the system. LambdaMail is still under active development and, given that it was written for a single use case, lacks any documentation. However it's a pretty simple Scheme program, so glancing over the code should suffice. License ------- LambdaMail is free software, and is made available under version 3.0 of the GNU General Public License. A copy of this license can be found in the file named COPYING.