Webhooks with DNS not working

[garnul]

Dear Shelly Members,

since my Shelly family is growing and I do not want to remember all IP addresses, I thought about setting up a DNS server on my Synology NAS and assign some remembable names to the IP addresses.

However, even though configuring my Snyology as DNS server (I have static IPs for all my Shellys) and being able to access the Shellys from other devices like my laptop, Weboohks configured with DNS name do not work while Webhooks configured with the IP address work flawlessly.

Does anybody know this issue and has overcome this? Is this a known issue?

Thanks in advance and best regards,

garnul