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Closes #530
DKIM signature is currently checked by OpenDKIM milter attached to `smtpd` running on port 25. Once it is checked, it is not useful for anything. You cannot change it later...
Postfix `smtp` (`journalctl -u [email protected] -t postfix/smtp`) should log something with `status=bounced` every time a mail is rejected. For example: ``` status=bounced (host mailchat.pl[95.216.211.166] said: 554 5.7.1 No valid DKIM...
TLS 1.3 session resumption can be tested by running ` openssl s_client -connect c2.testrun.org:443 -tls1_3 -sess_out sess.pem ` followed by ` openssl s_client -connect c2.testrun.org:443 -tls1_3 -sess_in sess.pem ` On...
Currently chatmail does not do anything special to expire stored notification tokens. Tokens are only removed if notifications.delta.chat server responds that the token is gone. We should make the tokens...
Users on nine.testrun.org report that they have a group where attempting to send results in error "5.1.1 ... User does not exist" for some nine.testrun.org users. But users sending from...
For example, if you run `openssl s_client -connect staging.testrun.org:465 -tls1_3 -sess_out sess.pem`, command output contains `New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384` (new session is established) and `Post-Handshake New Session Ticket arrived:`...
[Encrypted Client Hello](https://datatracker.ietf.org/doc/draft-ietf-tls-esni/22/) allows to encrypt client hello fields such as SNI and ALPN list. This will hide which service (IMAP, SMTP or HTTPS) is accessed, as well as the...
This is a follow-up to #328 We now have `mtail` metrics which are more flexible and can also count new registrations and similar metrics. `/metrics` is created by a cronjob...
The app requires Android 11. I found alternative https://f-droid.org/en/packages/com.google.android.diskusage/ but it does not have easy-to-use interface (starting with a confusing "View" dialog that only shows "Storage card" for non-rooted phone)...