A test authorization for gitlab.fkti.etu.ru to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
194.85.169.149: Connection refused
Challenge update failures for gitlab.fkti.etu.ru in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/4918094824
acme: error code 400 "urn:ietf:params:acme:error:connection": 194.85.169.149: Connection refused
The IANA public suffix is the TLD of the Registered Domain
The TLD for gitlab.fkti.etu.ru is: ru
5 Certificates contributing to rate limits for this domain
Serial: 360463608094152474461915775058683617236383
NotBefore: 2022-10-26 15:52:19 +0000 UTC
Names: [help.etu.ru]
Serial: 262309798977537466305920286731430193421222
NotBefore: 2022-10-26 15:19:35 +0000 UTC
Names: [online.etu.ru www.online.etu.ru]
Serial: 317982897220432086526981814935458590338218
NotBefore: 2022-10-26 08:25:47 +0000 UTC
Names: [dev.events.priem.etu.ru dev.exam.priem.etu.ru dev.indek.etu.ru events.priem.etu.ru exam.priem.etu.ru indek.etu.ru test.events.priem.etu.ru]
Serial: 346387127178453844379074732472450939932530
NotBefore: 2022-10-25 21:47:38 +0000 UTC
Names: [dev.property.etu.ru]
Serial: 308964000814846758251993351890015407989404
NotBefore: 2022-10-25 20:04:34 +0000 UTC
Names: [property.etu.ru]
The current status.io status for Let's Encrypt
Operational