[Serusers] Question for incoming PSTN calls

Hi, I have my subscribers registered with a specific domain (ie: 0123456789(a)company.com) in subscribers table. The subscribers are geographic numbers and can made PSTN calls (outgoing calls). The question is for incoming PSTN calls: the gateway (Cisco) transfer calls to SER as <mailto:0123456789@192.168.0.1> 0123456789(a)192.168.0.1 (the IP of SER Server) and receive the error “Forbidden” because the subscriber is registered as <mailto:0123456789@company.com> 0123456789(a)company.com. Can I replace “@192.168.0.1” with “@company.com” or disabile this check? Can someone help me? Thanks in advance, Giò