This error is from your system and says that the connection was refused.
You have no internet access or port is blocked or firewall rules do not count for the process.
This FAQ entry tells you needed ports and the domains you must be able to reach.
I am in the same boat. We were having random server crashes and upon investigation, I discovered that the server was shutting down, not crashing. The logs show an accounting2.teamspeak.com error ever since January 15th, 2020. We are running Windows Server 2016 with TS Server Version 3.11.1. We were running a previous version. After I updated, the issue still remained.
2020-01-15 01:11:40.576007|INFO | | |myTeamSpeak identifier revocation list was downloaded successfully - all related features are activated
2020-01-15 01:11:41.435358|INFO | | |Puzzle precompute time: 1296
2020-01-15 01:11:41.439264|INFO |FileManager | |listening on 0.0.0.0:30033, [::]:30033
2020-01-15 01:11:41.483213|INFO |Query | |listening for query on 0.0.0.0:47660, [::]:47660
2020-01-15 01:11:41.483213|INFO |Query | |listening for query ssh on 0.0.0.0:10022, [::]:10022
2020-01-15 01:11:41.483213|INFO |CIDRManager | |updated query_ip_whitelist ips: 127.0.0.1/32, ::1/128,
2020-01-16 01:11:40.698246|INFO | | |myTeamSpeak identifier revocation list was downloaded successfully - all related features are activated
2020-01-17 01:11:40.812514|INFO | | |myTeamSpeak identifier revocation list was downloaded successfully - all related features are activated
2020-01-17 16:13:04.997372|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: CANCELED
2020-01-17 16:13:05.019903|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-18 01:11:40.926988|INFO | | |myTeamSpeak identifier revocation list was downloaded successfully - all related features are activated
2020-01-18 16:14:25.144278|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-01-18 16:14:25.178387|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-18 17:14:25.075707|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-01-18 17:14:25.096218|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-18 18:14:25.130560|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-01-18 18:14:25.150069|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-18 19:14:25.096238|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-01-18 19:14:25.117585|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-18 20:04:19.007172|INFO |ServerLibPriv | |failed to download revocation list - count: 1
All the logs since then have shown similar if not the same errors until January 31st, 2020 we started getting this.
2020-01-31 22:57:25.173196|INFO |ServerLibPriv | |failed to download revocation list - count: 1
2020-01-31 22:57:25.179048|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: SSL_ERROR: Alert on protocol: TLS 1.2 level: fatal error: unsupported_certificate (43)
2020-01-31 22:57:25.199600|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-01-31 22:57:25.199600|ERROR |Accounting | |Unable to connect to accounting server
2020-01-31 22:57:26.147843|INFO |ServerLibPriv | |failed to download revocation list - count: 1
2020-01-31 22:57:26.215237|INFO | | |Puzzle precompute time: 1058
2020-01-31 22:57:26.220073|INFO |FileManager | |listening on 0.0.0.0:30033, [::]:30033
2020-01-31 22:57:26.295273|INFO |Query | |listening for query on 0.0.0.0:47660, [::]:47660
2020-01-31 22:57:26.296235|INFO |Query | |listening for query ssh on 0.0.0.0:10022, [::]:10022
2020-01-31 22:57:26.300137|INFO |CIDRManager | |updated query_ip_whitelist ips: 127.0.0.1/32, ::1/128,
2020-02-01 00:00:25.122971|INFO |VirtualSvrMgr | |executing monthly interval
2020-02-01 00:00:25.140585|INFO |VirtualSvrMgr | |reset virtualserver traffic statistics
2020-02-01 00:57:25.133982|ERROR |Accounting | |Could not connect to accounting server after multiple attempts, shutting down server
The server has shut down over 20 times since then, however the last few have changed to this.
2020-02-01 10:02:19.237297|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-02-01 10:02:19.319322|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-02-01 10:02:19.319322|ERROR |Accounting | |Unable to connect to accounting server
2020-02-01 10:05:34.271465|INFO |ServerLibPriv | |failed to download revocation list - count: 1
2020-02-01 10:05:34.271465|INFO |ServerLibPriv | |failed to download revocation list - count: 1
And here is more of the shutdowns.
2020-02-01 06:32:26.299573|ERROR |Accounting | |Error contacting server https://accounting2.teamspeak.com: TIMEOUT
2020-02-01 06:32:26.299573|INFO |ServerLibPriv | |failed to download revocation list - count: 1
2020-02-01 06:32:26.320077|ERROR |Accounting | |Error contacting server https://backupaccounting2.teamspeak.com: RESOLVE_ERROR: No such host is known
2020-02-01 06:32:26.320077|ERROR |Accounting | |Unable to connect to accounting server
2020-02-01 06:32:26.325973|INFO |ServerLibPriv | |failed to download revocation list - count: 1
2020-02-01 08:31:42.720498|ERROR |Accounting | |Could not connect to accounting server after multiple attempts, shutting down server
It’s still an issue for me, as it’s been happening on and off since Friday, since I got version 3.11.0.
the failure is always around 11-13pm and 00-2am for about 5-10 minutes. Therefore I do not assume that my IP will be banned.
I finally had a chance to follow up with you and test. The url is still timing out. Upon loading the url I get a 404 error. The backup url isn’t found on any devices across multiple networks. I also tried downgrading back to 3.9.1 on the same machine (with original files backed up) with no success. A copy as well as a backup copy of the Teamspeak server on a completely different system seems to be working with no problems. Checking the logs show the list downloaded successfully on 3.9.1. It doesn’t make any sense.
I didn’t even think about Cloudflare. It appears cloudlfare is blocking the ip of the webserver for some reason. I have the UK excluded. I’m going to try excluding the specific IP and see what happens.
I’ve given it time to propagate across the servers and the issue still exists. The server has not been running either. We have the server on a temporary server that is not having any issues, which is really odd to me. I’ve started the server and connected to it and I am still getting the same errors. It doesn’t make any sense to me.
The server itself has been offline for 9 days now. As soon as I reported the issue, I transferred the server to a temporary location on a separate machine. The block that I reported earlier turned out to just be our website cron jobs running too often.