Check out ntify, it might fit your use case
this post was submitted on 31 Oct 2023
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You don't need an SMTP server if you just want to send mail out outbound. Just use mailx.
This is the way, @mumblefish. I use mail from mailutils:
mail "$recipient" \
-r "$emailFrom" \
-s "$emailSubject" \
< "$filename"
where $filename is a file containing the body content of the email.
I wanted to try this first, I can see lemmy parsed a less-than into "<", which I replaced. But I'm getting no e-mails to the $recipient address. I set $emailFrom to a completely fake one, and another time as my personal, same as $recipient, address, but I'm not receiving any e-mails.
It's definitely going to go to spam since there's no SPF record. You'll need to manually whitelist that address on the receiving end.
Cannot find it in my spam-folder either, and with the mailutils mail I set also set the -r $emailFrom to something that is whitelisted in my spamfilter. But maybe my mail-service provider has some other block. Could that be? Or that it looks very fishy with an e-mail with only from, to, and subject headers non-empty?
You've initially said you wanted to receive it locally only. Now you're pulling external email providers into the mix. You need to set up spf and dmarc for that at the minimum. I can help you with it, but it's nowhere near as simple as just emailing a local user.
You definitely don't need dmarc for that. Don't even need dkim, really.
You are technically correct.
Sorry, I must not have explained myself very well. I guess it is the part on receiving on localhost. What I meant to say was that I would like the smtp, or whatever, to only be available on localhost, so that no one else on the network can use the service to send e-mails.
Postfix can be configured to only listen on localhost. Most things can be, actually.
Ah, postfix looks like what I'm looking for, thanks. Have to see if I can figure out how to configure it.
I tried a:
echo "something" | mailx -s "subject" [my_personal_email]
but I'm not receiving anything... hmm
For a second I thought I had made the perfect solution for this, but then I realized my problem was the opposite. I was looking for a way to receive notifications from systems that can only send emails. So I quickly made the Mail2Gotify service and have been using it for the past while.
I'll post it here anyway in case you want to switch from emails to Gotify in the future!
I know it's not exactly what you're looking for but I've explored some (free) options myself with good deliverability and ended up settling on smtp2go. Tied it to my domain, and it allows me to send 1000 emails/month hassle free. Everything else I looked into either wouldn't get delivered or costed way more I thought was worth for simple notifications.
I'll echo the other comment and say gotify could be a great option as well, I only stuck with email because it's easier on less tech literate family I provide services to and whatnot.