# Synapse – Server Errors by federation
**URL:** https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253
**Category:** Support
**Tags:** english
**Created:** [February 28, 2019, 6:44pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253 "2019-02-28T18:44:54Z")
**Posts on this page:** 12
**Page:** 4
### Author:  [@Josue](https://forum.yunohost.org/u/Josue)
#### Post date: [March 13, 2019, 7:09pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/62 "2019-03-13T19:09:11Z")
Ok so what is the certificate proveided when you type this url in your browser : [https://domain.tld:8448/\_matrix/client](https://domain.tld:8448/_matrix/client) ?
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 13, 2019, 7:53pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/63 "2019-03-13T19:53:36Z")
synapse is installed under my.domian.tld
Here i get for [https://my.domian.tld:8448/\_matrix/client](https://my.domian.tld:8448/_matrix/client)
„No Such Resource“
the riot client in installed under riot.domain.tld
Here i get for [https://riot.domian.tld:8448/\_matrix/client](https://riot.domian.tld:8448/_matrix/client)
„The connection is not save“
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### Author:  [@Josue](https://forum.yunohost.org/u/Josue)
#### Post date: [March 13, 2019, 9:44pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/64 "2019-03-13T21:44:28Z")
It’s normal that you have a “No Such resource”. The question is what type of certificate do you get ?
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 13, 2019, 10:23pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/65 "2019-03-13T22:23:45Z")
??
[https://my.domian.tld:8448/\_matrix/client](https://my.domian.tld:8448/_matrix/client) just gives me
# No Such Resource
Sorry. No luck finding that resource.
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### Author:  [@Josue](https://forum.yunohost.org/u/Josue)
#### Post date: [March 13, 2019, 10:37pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/66 "2019-03-13T22:37:03Z")
You can see this information here :
[ ](https://yunohost.org/images/certificate-signed-by-LE.png)
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 14, 2019, 2:45pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/67 "2019-03-14T14:45:02Z")
YES i do
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### Author:  [@Josue](https://forum.yunohost.org/u/Josue)
#### Post date: [March 14, 2019, 5:03pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/68 "2019-03-14T17:03:53Z")
So if you go at this url [https://my.domian.tld:8448/\_matrix/client](https://my.domian.tld:8448/_matrix/client) , and you see which type of certificate do you have what is the result ? Do you get a certificat signed by let’s encrypt ?
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 14, 2019, 5:19pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/69 "2019-03-14T17:19:37Z")
on [https://my.domain.tld:8448/\_matrix/client](https://my.domain.tld:8448/_matrix/client) I see the certificat signed by let’s encrypt
on [https://riot.domain.tld](https://riot.domain.tld/) I see the certificat signed by let’s encrypt
on [https://riot.domain.tld:8448/\_matrix/client](https://riot.domain.tld:8448/_matrix/client) I DON´T see the certificat signed by let’s encrypt
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### Author:  [@Josue](https://forum.yunohost.org/u/Josue)
#### Post date: [March 14, 2019, 5:48pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/70 "2019-03-14T17:48:20Z")
So in this case there are no reason that you get an error about your certificate for the federation
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 15, 2019, 6:32am UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/71 "2019-03-15T06:32:25Z")
So maybe the testing software at [https://www.arewereadyyet.com/](https://www.arewereadyyet.com/) is not working right?
But like I said I can´t federate with servers from the list:
[https://www.hello-matrix.net/public\_servers.php](https://www.hello-matrix.net/public_servers.php)
This servers get mostly a green light at [arewereadyyet.com](https://www.arewereadyyet.com/)
[Josue](https://forum.yunohost.org/u/Josue) could you name me an account on an other server I could try to federate with which has installed your yunohost synapse testing version?
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### Author:  [@rockyIII](https://forum.yunohost.org/u/rockyIII)
#### Post date: [March 15, 2019, 7:25am UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/72 "2019-03-15T07:25:24Z")
[Josue](https://forum.yunohost.org/u/Josue) Thanks for your message…
this server you named is working finde and also gets all green lights at [arewereadyyet.com](https://www.arewereadyyet.com/) - so the problem seams to be at my server… check your riot account - thanks
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### Author:  [@Aleks](https://forum.yunohost.org/u/Aleks)
#### Post date: [January 18, 2023, 8:22pm UTC](https://forum.yunohost.org/t/synapse-server-errors-by-federation/7253/73 "2023-01-18T20:22:56Z")
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