Yes I had considered that, but considering that ours is not a giant but moderate instance (a thousand subscribers) it seemed exaggerated to get to have 1GB occupied every day.

well, indeed it could be just that. I just checked and it’s size is 15GB 😱

Thanks, will try it 👍

My problem was that the Hetzner server was new and therefore certain ports were closed. I solved it by contacting Hetzner support and having them open the ports.

Found out just now what the problem was.

I am writing this to help others: the federation was active in that instance but it was also marked as a private instance. This gave no problems in using it until the update (probably because it is restarted and re-run Docker).

I removed the federation from the config file leaving only the private instance and it restarted immediately.

I have answered and find the solution here: https://lemmy.ml/post/258218/comment/176759

Thanks for the help!

yes, actually i tried ‘none’, ‘tls’ and ‘starttls’ but with no success. I tried with external SMTP because the default created by ansible does not work:

  email: {
    smtp_server: "postfix:25"
    smtp_from_address: "noreply@mydomain.it"
    tls_type: "none"
  }

It is the same thing that I thought. Unfortunately, if I try to manually force the port by writing smtps.aruba.it:465 as I said the server freezes for several minutes, goes to 504 and does not send any email.

So I can not understand if the port must be entered in another way (?) or if I have to install something on the server first to be able to send an email through an external SMTP as in this case?