custom authentication using user@domain with ldap when multiple LDAPs are added in keycloak

[Sreehari Tummala]

Hi All,

I need your help to achieve the following user case-

Use case. Two or more LDAPs are configured/added in keycloak based on sAMAccountName. The LDAPs can have same users/username(s). We need to support authentication using user@domain format in keycloak username/password screen.
Please advice if we can write a SPI to do this. The SPI should split user@domain, find the LDAP corresponding to the domain and authenticate to that LDAP using user
Please also advise if there is any other approach to solve this problem

I have posted my question at https://github.com/keycloak/keycloak/discussions/36962

Thanks in advance!

Thanks,

Sreehari