Neige25  Freshman Member

Yes, the USG is pinging the server well. I have checked my configuration on Synology, it is correct. (it works for another customer with the same configuration)

Thank you for your reply. I have checked and the certificates are correctly configured. I also add the Domain Zone Forwarder. But it doesn't work :(

Hello, I'm having the same issue.. I've tried this on many hardware.. It works on Synology RS815+ with : - DSM 6.2.3-25426 Update 2 - Synology Directory Server 4.4.5-0101 - Zyxel USG110 V4.39(AAPH.0) But it doesn't work on Synology RS812+ with : - DSM 6.2.3-25426 Update 2 - Synology Directory Server 4.4.5-0101 - Zyxel…