this post was submitted on 13 Aug 2023
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Selfhosted

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My own mail server (lemmy.world)
submitted 1 year ago by Trondk@lemmy.world to c/selfhosted@lemmy.world
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I have run my own mail server now for 20+ years. its is runnig postfix , with spamassain. the users have imaps, and roundcube www gui.

It had been running fine, and have been updated HW / OS a lot of time over the years, now its runnig on rocky O/S

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[–] Anafroj@sh.itjust.works 1 points 1 year ago* (last edited 1 year ago)

I do have to say for the purpose of tinkering I love these bigger projects because you learn so much on the way. Now having read your answer I am even more exited to try it out :D

That's awesome to hear! Welcome, and have fun! :)

I haven’t heard of most of your abbreviations/term till now

Oh, my apologies. Here is a definition list :

  • SMTP : Simple Mail Transfer Protocol : the base of any mail system, it's the server you contact to send emails, which relays your mail to an other SMTP server (where your contact is hosted), which stores the mail for user to retrieve
  • IMAP : Internet Message Access Protocol : one of the protocols that can be used to retrieve emails from your mailserver (the other one being POP3)
  • SPF : Sender Policy Framework, a configuration on your domain name specifying which machines are allowed to send mails in its name
  • DKIM : DomainKeys Identified Mail : a signing process (signing each mail) to validate the "From" email address is indeed authorized from the domain it pretends to
  • DMARC : a warning system to let you know when someone pretended to be you (also giving instructions about what to do with emails when SPF and/or DKIM are missing or wrong)