All this new excitement with Lemmy and federation has got me thinking that maybe I should learn to run my own instance. What always comes up though is how email is the orginal federated technology.
I am looking at proxmox and see that is has a built in email server, so now I am wondering if it is time to role my own.
I stopped using gmail a long time ago, and right now I use ProtonMail, but I am super frustrated with the dumb limitation of only having a single account for the app. I get why they do it, and I am willing to pay, but it is pricey and I don’t know if that is my best option. I guess it is worth it since ProtonVPN is included. It looks like they are expanding their suite.
Is it worth it? Can I make it secure? Is it stupid to run it off a local computer on my home network?
Yes, I still run my own email server. It is not for the faint of heart, but once it’s configured and your IP reputation is clean, it’s mostly smooth sailing. I have not had any deliverability problems to date, initial setup/learning period notwithstanding.
If you’re not scared away yet, here are some specific challenges you’ll face:
- SMTP ports are typically blocked by many providers as a spam prevention measure. Hosting on a residential connection is often a complete non-starter and is becoming more difficult on business class connections as well (at least in the US, anyway).
- If you plan to host in a VPS, good luck getting a clean IPv4 address. Most are on one or more public blacklists and likely several company-specific ones (cough Microsoft cough). I spent about 2 weeks getting my new VPS’s IP reputation cleaned up before I migrated from the old VPS.
- Uptime: You need to have a reliable hosting solution with minimal power/server/network downtime.
- Learning Curve: Email is not just one technology; it’s several that work together. So in a very basic email server, you will have Postfix as your MTA, Dovecot as your MDA, some kind of spam detection and filtering (e.g. SpamAssassin), some kind of antivirus to scan messages/attachments (e.g. Clamd), message signing (DKIM), user administration/management, webmail, etc. You’ll need to get all of these configured and operating in harmony.
- Spam prevention standards: You’ll need to know how to work with DNS and create/manage all of the appropriate records on your domain (MX, SPF, DMARC, DKIM records, etc). All of these are pretty much required in 2023 in order for messages from your server to reach your recipient.
- Keeping your IP reputation clean: This is an ongoing challenge if you host for a lot of people. It can only take one or two compromised accounts to send a LOT of spam and land your IP/IP block on a blacklist.
- Keeping up with new standards: When I set my mail server up, DMARC and DKIM weren’t required by most recipient servers. Around 2016, I had to bolt on OpenDKIM to my email stack otherwise my messages ended up in the recipient’s spam folder. -Contingency Plan: One day you may just wake up and decide it’s too much to keep managing your own email server. I’m not there yet, but I’ve already got a plan in place to let a bigger player take over when the time comes.
Jep. running a linux mailserver for now 20+ years
its now running postfix :-), in a vm on proxmox…
Proxmox is awesome. Sort of the answer to most of my server wants.
I’ve been self-hosting e-mail for over 15 years and hope to continue doing so. Although it’s being made increasingly difficult by big tech players. I wrote about it here: https://proycon.anaproy.nl/posts/rant-against-centralising-e-mail/
Despite my willingness to self-host almost everything, e-mail remains the last frontier for me. Keeping abreast of standards, keeping up today, avoiding implications in abuse and many, many smaller issues abound … and that’s despite my fixed IP and ISP willing to set up a reverse-DNS for me.
Instead I’ve gone with a paid email provider that I’m REALLY happy with.
Not likely worth it. Primary reason is that the large federated email services are skeptical of email from services such as your proposed self hosting solution and may simply not deliver the mail you send. This is to mitigate against spammers setting up bespoke servers.
There are a bunch of other things that could go wrong if you don’t set everything up perfectly, but even if you do, this would be a big problem.
Better off using a custom domain with a big provider. Fewer headaches. I like Fastmail, but many others are great too.
Obligatory PSA: ProtonMail isn’t any more secure than Gmail and is likely a honeypot scheme crafted by government agencies: https://encryp.ch/blog/disturbing-facts-about-protonmail/
I know the title of that sounds clickbaity, but they cite their sources. It’s worth the read for those curious about ProtonMail’s history and their CEOs.
Tbh, that document reads like a discovery channel 2am aliens documentary, but it’s not completely without merit.
There are a couple line items about software services they’re using that are shitty that sound pretty legit. The fact that they’re operating in locations where they might have to hand over data sounds pretty legit. Their warrant compliance and logging/handing over a person’s IP address is legit.
The CIA honeypot stuff is all really circumstantial. If the CIA was in as deep as is claimed, a lot of the real evidence people are turning up that they’re not a secure as they could be would be unnecessary.
My best guess is they decided to make an email company based in Switzerland with the schtick that they’re secure (banks amirite?) They’re doing what they can to appear secure without spending too much money. They’re not going to have legal battles to keep your data private, and they are going to comply with agencies request for data. Even if they support end-to-end encryption if they are required by an agency to turn that encryption off for you, they’re going to do it.
They’re probably less likely than Google or Microsoft to sell all of your data to the highest bidder, but realistically there’s no such thing as secure email.
Not worth the hassle - best compromise is to get your own domain but use a provider like fastmail to host it.
If they turn sour you can move your domain to another mail host.
