Hi Will,
It is not support. According to your description, the DNS suffix of Edge and FE server are different, and in your environment, users’ SIP address is different from the FE and Edge DNS suffix.
The domain for the Edge could be different from your FE domain, because the edge is not member of any domain. However, your published sip domain (hello.com) must be identical to your primary SIP domain. For example: your internal domain name can be xxx.hello.local
but the sip address for your users will be hello.com.
You could refer to
the similar case to find more details.
Best Regards,
Evan Jiang
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