GitHub - gene-hightower/ghsmtp: Gene's SMTP server — receive Internet mail with less fuss

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Gene's SMTP server — receive Internet mail with less fuss

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Name		Name	Last commit message	Last commit date
Latest commit History 2,735 Commits
MKUltra @ 41aea24		MKUltra @ 41aea24
PEGTL @ 1c1aa6e		PEGTL @ 1c1aa6e
cppcodec @ bd6ddf9		cppcodec @ bd6ddf9
jnk		jnk
testcase_dir		testcase_dir
testout_dir		testout_dir
.gitignore		.gitignore
.gitmodules		.gitmodules
Base64-test.cpp		Base64-test.cpp
Base64.cpp		Base64.cpp
Base64.hpp		Base64.hpp
CDB-test.cpp		CDB-test.cpp
CDB.cpp		CDB.cpp
CDB.hpp		CDB.hpp
COPYING		COPYING
Copyright.txt		Copyright.txt
DNS-fcrdns.cpp		DNS-fcrdns.cpp
DNS-fcrdns.hpp		DNS-fcrdns.hpp
DNS-iostream.hpp		DNS-iostream.hpp
DNS-ldns.cpp		DNS-ldns.cpp
DNS-ldns.hpp		DNS-ldns.hpp
DNS-message.cpp		DNS-message.cpp
DNS-message.hpp		DNS-message.hpp
DNS-rrs.cpp		DNS-rrs.cpp
DNS-rrs.hpp		DNS-rrs.hpp
DNS-test.cpp		DNS-test.cpp
DNS.cpp		DNS.cpp
DNS.hpp		DNS.hpp
Domain-test.cpp		Domain-test.cpp
Domain.cpp		Domain.cpp
Domain.hpp		Domain.hpp
Hash-test.cpp		Hash-test.cpp
Hash.hpp		Hash.hpp
IP.cpp		IP.cpp
IP.hpp		IP.hpp
IP4-test.cpp		IP4-test.cpp
IP4.cpp		IP4.cpp
IP4.hpp		IP4.hpp
IP6-test.cpp		IP6-test.cpp
IP6.cpp		IP6.cpp
IP6.hpp		IP6.hpp
License.txt		License.txt
Magic-test.cpp		Magic-test.cpp
Magic.cpp		Magic.cpp
Magic.hpp		Magic.hpp
Mailbox-test.cpp		Mailbox-test.cpp
Mailbox.cpp		Mailbox.cpp
Mailbox.hpp		Mailbox.hpp
Makefile		Makefile
MessageStore-test.cpp		MessageStore-test.cpp
MessageStore.cpp		MessageStore.cpp
MessageStore.hpp		MessageStore.hpp
Now-test.cpp		Now-test.cpp
Now.hpp		Now.hpp
OpenARC.cpp		OpenARC.cpp
OpenARC.hpp		OpenARC.hpp
OpenDKIM-test.cpp		OpenDKIM-test.cpp
OpenDKIM.cpp		OpenDKIM.cpp
OpenDKIM.hpp		OpenDKIM.hpp
OpenDMARC.cpp		OpenDMARC.cpp
OpenDMARC.hpp		OpenDMARC.hpp
POSIX-test.cpp		POSIX-test.cpp
POSIX.cpp		POSIX.cpp
POSIX.hpp		POSIX.hpp
Pill-test.cpp		Pill-test.cpp
Pill.cpp		Pill.cpp
Pill.hpp		Pill.hpp
README		README
Reply-test.cpp		Reply-test.cpp
Reply.cpp		Reply.cpp
Reply.hpp		Reply.hpp
SPF-test.cpp		SPF-test.cpp
SPF.cpp		SPF.cpp
SPF.hpp		SPF.hpp
SRS-test.cpp		SRS-test.cpp
SRS.cpp		SRS.cpp
SRS.hpp		SRS.hpp
Send-test.cpp		Send-test.cpp
Send.cpp		Send.cpp
Send.hpp		Send.hpp
Session-test.cpp		Session-test.cpp
Session.cpp		Session.cpp
Session.hpp		Session.hpp
Sock-test.cpp		Sock-test.cpp
Sock.cpp		Sock.cpp
Sock.hpp		Sock.hpp
SockBuffer-test.cpp		SockBuffer-test.cpp
SockBuffer.cpp		SockBuffer.cpp
SockBuffer.hpp		SockBuffer.hpp
TLD-test.cpp		TLD-test.cpp
TLD.hpp		TLD.hpp
TLS-OpenSSL-test.cpp		TLS-OpenSSL-test.cpp
TLS-OpenSSL.cpp		TLS-OpenSSL.cpp
TLS-OpenSSL.hpp		TLS-OpenSSL.hpp
UTF8.hpp		UTF8.hpp
_clang-format		_clang-format
allow		allow
arcsign.cpp		arcsign.cpp
arcverify.cpp		arcverify.cpp
bad_senders		bad_senders

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Gene Hightower's SMTP server.

A program to receive Internet (RFC 5321) mail.  This is a “personal
domain” type program that delivers mail for all addresses to a single
user's ~/Maildir.

Free software — AGPLv3 with OpenSSL exception.

Written using Standard C++ — plus PEGTL, (at one time Ragel, before
that Bison), OpenSSL, boost-iostreams, ldns, spf2, regdom, TinyCDB,
glog etc.  Compiles with recent GCC and Clang.

sudo dnf install \
  boost-devel \
  file-devel \
  fmt-devel \
  glog-devel \
  ldns-devel \
  libasan \
  libidn2-devel \
  libopenarc-devel \
  libopendkim-devel \
  libopendmarc-devel \
  libpsl-devel \
  libspf2-devel \
  libubsan \
  libunistring-devel \
  openssl-devel \
  tinycdb-devel

sudo apt-get install \
  libboost-all-dev   \
  libcdb-dev         \
  libfmt-dev         \
  libgoogle-glog-dev \
  libidn2-dev        \
  libldns-dev        \
  libmagic-dev       \
  libopendkim-dev    \
  libopendmarc-dev   \
  libpsl-dev         \
  libspf2-dev        \
  libunistring-dev   \
  pkg-config

Run it from (x)inetd or daemontools as a non-root user.  It will
accept mail and store it in that user's ~/Maildir.

I run it on the Fedora distribution of GNU/Linux/systemd — might also
work on other platforms.

Support for some useful SMTP extensions:

RFC 1870: Message Size Declaration
RFC 2920: Command Pipelining
RFC 3030: Transmission of Large and Binary MIME Messages
RFC 3207: Secure SMTP over Transport Layer Security
RFC 3463: Enhanced Mail System Status Codes
RFC 6152: 8-bit MIME Transport
RFC 6531: Internationalized Email

The software works with IPv4 and IPv6, mostly.

I wrote this to experiment with and learn about Internet mail.  I do
use it as my every day SMTP server for a number of domains.