chatmail/relay 1.8.0

add TURN for audio calls, improve performance

on GitHub

1.8.0

The ecosystem is moving!

With the rolling v2.33 Delta Chat releases, users can switch from one relay to another: https://support.delta.chat/t/how-to-migrate-your-profile-to-another-relay-version-2-33/4441 - and this is just the first step!

Also, users can add "Debug calls" in the experimental settings now. This will enable 1on1 calls. Usually the connection is established peer-to-peer, but if their networks don't allow that, users on your relay will now be able to use your relay's TURN for establishing the connection. Note: this can lead to higher traffic, but typically doesn't use CPU, RAM, or disk space.

Interesting changelog items:

Customizability

• don't deploy the website if there are merge conflicts in the www folder (#714)

• Specify nginx.conf to only handle mail_domain, www, and mta-sts domains (#636)

• Add acme_email parameter to chatmail.ini for Let's Encrypt ACME email (#663)

• cmdeploy: make --ssh-host work with localhost (#659)

• Add --skip-dns-check argument to cmdeploy run command, which disables DNS record checking before installation. (#661)

Dropped legacy features

• Remove echobot (#753)

• Remove xstore@testrun.org from default passthrough recipients (#722)

Connectivity

• Setup TURN server for audio calls (#621)

• Require TLS 1.2 for outgoing SMTP connections (#685, #730)

• Require STARTTLS for incoming port 25 connections (#684, #730)

• Increase opendkim DNS Timeout from 5 to 60 seconds to reduce DKIM errors (#672)

Performance improvements

• save RAM, by not compressing IMAP connections by default anymore. enable imap_compress in chatmail.ini to restore old behavior: (#760)

• Rework expiry of message files and mailboxes in Python to only do a single iteration over sometimes millions of messages instead of doing "find" commands that iterate 9 times over the messages. Provide an "fsreport" CLI for more fine grained analysis of message files. (#637)

• made filtermail more efficient (#676 and #674)

Miscellaneous

• Add robots.txt to exclude all web crawlers (#732)

• acmetool: accept new Let's Encrypt ToS: https://letsencrypt.org/documents/LE-SA-v1.6-August-18-2025.pdf (#729)

• acmetool: use ECDSA keys instead of RSA (#689)

• Organized cmdeploy into install, configure, and activate stages (#695)

• acmetool: replace cronjob with a systemd timer (#719)

• Use max username length in newemail.py, not min (#648)

New Contributors <3

• @lig made their first contribution in #705
• @PromyLOPh made their first contribution in #712
• @alxndr42 made their first contribution in #714
• @maikelthedev made their first contribution in #743
• @j4n made their first contribution in #747
• @Simon-Laux made their first contribution in #745
• @machocam made their first contribution in #767

Full Changelog: 1.7.0...1.8.0