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synapse: add mail config (currently broken)

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tl;dr: mail config works, but on trying to send mail synapse gets rejected by
postfix for using a too-old version of tls, as apparently tls in twisted (the
python library used for mail in synapse) is just hardcoded to v1, which our
postfix rejects.

```
postfix/smtpd[9737]: warning: TLS library problem: error:14209102:SSL routines:tls_early_post_process_client_hello:unsupported protocol:ssl/statem/statem_srvr.c:1685:
synapse[9211]: synapse.handlers.identity: [POST-41] Error sending threepid validation email to stuebinm@hacc.space
               Traceback (most recent call last):
                 File "/nix/store/55mh6w2ark2blrbkyq0d1jjg9alb1dw5-matrix-synapse-1.29.0/lib/python3.8/site-packages/synapse/handlers/identity.py", line 382, in send_threepid_validation
                   await send_email_func(email_address, token, client_secret, session_id)
                 File "/nix/store/55mh6w2ark2blrbkyq0d1jjg9alb1dw5-matrix-synapse-1.29.0/lib/python3.8/site-packages/synapse/push/mailer.py", line 207, in send_add_threepid_mail
                   await self.send_email(
                 File "/nix/store/55mh6w2ark2blrbkyq0d1jjg9alb1dw5-matrix-synapse-1.29.0/lib/python3.8/site-packages/synapse/push/mailer.py", line 349, in send_email
                   await make_deferred_yieldable(
               twisted.mail._except.SMTPConnectError: Unable to connect to server.
```

This is a known issue [1], which should be fixed in the current version of twisted,
which will be in the next version of synapse.

[1] https://github.com/matrix-org/synapse/issues/6211
This commit is contained in:
stuebinm 2021-03-25 14:39:25 +01:00 committed by schweby
parent 4c7e07241b
commit f739329087
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13
hosts/hainich/services/matrix-synapse.nix
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@ -84,6 +84,19 @@
services.matrix-synapse = {
enable = true;
server_name = "hacc.space";
extraConfigFiles = [ "/var/lib/matrix-synapse/secrets.yml" ];
extraConfig = ''
public_baseurl: https://matrix.hacc.space
email:
smtp_host: mail.hacc.space
smtp_user: "noreply@infra4future.de"
smtp_port: 587
notif_from: "Your Friendly %(app)s homeserver <noreply@hacc.space>"
require_transport_security: true
enable_notifs: true
client_base_url: "https://element.hacc.space"
invite_client_location: "https://element.hacc.space"
'';
listeners = [ {
port = 8008;
bind_address = "::1";