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[QUESTION] How do instances that use platforms such as Lemmy send verification, password reset, etc. e-mails? Do they use SMTP or some external service that provides an API? (lemmy.world)

submitted 1 month ago* (last edited 1 month ago) by [email protected] to c/[email protected]

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[–] [email protected] 4 points 1 month ago* (last edited 1 month ago)

No, it's just a service that's running without me thinking about it.

My setup is:

debian as system
exim for smtp
courier for pop3
mariadb for accounts

But I'd like to make a point that's not being made in any of the other comments. It does not require an SMTP server to send e-mail. All you have to do is lookup the MX DNS record of the domain, connect to that SMTP server and write a few commands fx.:

EHLO senderdomain.tld
MAIL FROM:<[email protected]> 
RCPT TO:<[email protected]>
DATA
Subject: Blabla

Bla bla
.