Port 25 is used for email servers. This is because the server instance on a machine can prove to be run by an administrator. Additionally most providers don’t allow you to use port 25. Both techniques are used in order to avoid spam. But: Chatmail is not vulnerable to spam. So couldn’t we just choo…

This issue has been solved in the most recent version: [image] Deliver messages via HTTPS (filtermail-transport) Chatmail Relays I’m looking at the latest update, but I’m still unclear on the “Introduce filtermail-transport for delivering messages via HTTPS (SM…

Yes, this is what I just experienced as well. VPS provider blocks outbound traffic to port 25, and you need to open a ticket with them to ask to enable/increase packets per second on port 25. I hope they will allow it. All the relays would have to start listening on some other port, which will be d…

Chatmail relays used for censorship circumvention rely on looking like normal mailservers, but I guess not to active probing. Would offering an additional connection over an onion (Tor) or garlic (.i2p) site be a reasonable workaround? It could also circumvent this: [image] Nine.te…

Are there any chatmail servers with .i2p or .onion address?

I have mine running on the Yggdrasil meshnet but no one to test it with :pensive_face:

You aren’t alone! [image] Alternative P2P realtime chat method Feature Proposal try this, I use it, it’s very convenient and it’s very easy to add to delta chat Deltachat can of course run over a variety of networks: [image] Why C…

I’m happy to test it with you, you can add my relays to your transport maps. DM me for details.

Port 25 has many restrictions, why not using another for a "Chatmail network"?

Chatmail Relays

ian May 30, 2026, 8:23pm 7

This issue has been solved in the most recent version: