this post was submitted on 22 Apr 2024
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I have a raspberry pi running postfix. I Realised unless I open port 25 I absolutely cannot receive emails (I have 587 open and can send but not receive them). However I heard there are scaries online which someone could potentially send emails from your server without consent. I believe as well my ISP doesn't block port 25. Is there anything I should do right now before opening port 25, or should everything be safe enough?

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[–] CriticalMiss@lemmy.world 1 points 4 months ago

Hi, I recommend you read the book “Run Your Own Mail Server”. The fact that a book exists for this topic is all the proof you need to not do this decision. But if you absolutely must, this is the way.

[–] possiblylinux127@lemmy.zip 0 points 4 months ago (1 children)
[–] Flax_vert@feddit.uk 1 points 4 months ago
[–] originalucifer@moist.catsweat.com 0 points 4 months ago (1 children)

friends dont let friends host email. its just become too top heavy (complexity-wise) if you want it to be fully functional and secure.

[–] Flax_vert@feddit.uk 1 points 4 months ago

How can I have reliable email that I can control, then?

[–] taladar@sh.itjust.works 0 points 4 months ago (1 children)

You should be aware that a large number of mail hosters will block all mail from your server merely because it is sent from a dynamic IP address.

[–] Mixel@feddit.de 0 points 4 months ago

Meh that sucks i even have a perfectly working ddns, I mean I know I don't get something like a PTR record but i wish that mail hosters would allow for more self hosting options