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You should not run your mail server because mail is hard - poolp.org
TL;DR: - Mail is not hard: people keep repeating that because they read it, not because they tried it - Big Mailer Corps are quite happy with that myth, it keeps their userbase growing - Big Mailer Corps control a large percentage of the e-mail address space which is good for none of us - It's ok that people have their e-mails hosted at Big Mailer Corps as long as there's enough people outside too Disclaimer ** OBVIOUSY, I’M ASSUMING YOU ARE A SYSADMIN, WITH TECH KNOWLEDGE, WHO KNOW...
mail  email  smtp  infrastructure  server  selfhosted 
7 days ago by e2b
SMTP Field Manual
A collection of raw SMTP responses spotted in the wild
smtp  email  deliverability 
14 days ago by lauterthanbombs
jjguti - hermes
hermes is a GPL anti-spam solution that will help you get rid of (most) UCE.

It's key features are:

* Multiplatform:
hermes runs on Linux, Solaris and even on Windows.

* Transparent:
Although clients will connect to hermes, hermes won't display any message of
its own or alter in any way the communications with your real mail server,
except at the moment of greylisting.

* Efficient:
We have gone to great lengths to make hermes as efficient as possible, both
for your computer and for the SMTP server that it proxies.

* Configurable:
hermes is highly configurable, from greylisting time to logging method and
everything in between.

* Extension friendly:
We support most SMTP extensions such as SMTP-AUTH and STARTTLS.

* Compatible:
You can use hermes in combination with other techniques such as nolisting or
Bayesian Filtering either on the client side or on the server side (or both
if you prefer). You can also use fakehermes to fake a secondary smtp server
and further reduce your spam.
mailserver  smtp  spam 
17 days ago by dusko
Hermes Antispam Proxy
Hermes is a GPL anti-spam solution that will help you get rid of (most) UCE.

You can use hermes in combination with other techniques such as nolisting (http://en.wikipedia.org/wiki/Nolisting) or Bayesian Filtering (http://en.wikipedia.org/wiki/Bayesian_spam_filtering) either on the client side or on the server side (or both if you prefer). You can also use fakehermes (https://www.hermes-project.com/pages/fakehermes) to fake a secondary smtp server and further reduce your spam.
====

https://www.hermes-project.com/pages/hermes

Hermes is an SMTP proxy. We developed hermes for our own use on ITEISA, and we have perfected it with new features to cover our own needs. It is now being made public on the hope that it will help others to stop spam the same way it does for us everyday.

What makes it special is that it can be used to stop spam using a combination of the following techniques:
* SMTP banner delay
* Throttling
* Greylisting
* DNSBL
mailserver  smtp  spam 
17 days ago by dusko
Email School - Runbox
Welcome to the Runbox Email School, where we show you how to get the most out of email!

Although email is the most popular way to communicate online there are many misconceptions about it and how it works, and many people lack the knowledge or tools to use it efficiently.
About Runbox Email School

Through a series of articles we take you behind the scenes of email services, give you insight into the inner workings of email, show you how to communicate better, and teach you how to organize your email efficiently.

All this information is provided to you for free, whether or not you are a Runbox customer. So go ahead and browse the current courses of the Runbox Email School. More will follow, so stay tuned!
email  mailserver  smtp  reference 
18 days ago by dusko
Implementing the SMTP AUTH Command
This document clearly outlines the steps required to create a copy of Sendmail that implements the SMTP AUTH command (see RFC 2554), using the SASL library (see RFC 2222).
This approach has been verified to work with a number of mail clients, including Microsoft Windows clients such as Outlook Express and Pegasus Mail.
sendmail  smtp  authentication  ssl  tls 
20 days ago by dusko
You should not run your mail server because mail is hard - poolp.org
A lot of blah blah to suggest that running your own SMTP server isn't such a bad idea.
And it's not bad idea but he comes across as defensive and weirdly stuck on an unpersuasive argument: "Big Mailer Corps bad."
I'm sympathetic this point of view because the knock-on aspects of the network effect and vertical consolidation of email in the service of surveillance capitalism.

Instead I would have liked to have seen more discussion about _why_ you want to run your own email systems rather than why Big Bad Evil Corporations don't want you to.
email  self.hosting  self.hosted  sysadmin  infrastructure  dns  smtp  mail  devops  spam  consolidation  network.effect  surveillance.capitalism 
21 days ago by po

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