Bypass spam check for specific recipients in specific policy_bank

[Damian]

> What is the correct way / syntax to use bypass_spam_checks_maps to 
> apply to specific users within one Policy_bank only?

Try

> $policy_bank{POLICY_BANK} = {
>     # ...
>     bypass_spam_checks_maps => {
>         'bypass-this at domain.tld' => 1,
>         'bypass-that.tld' => 1,
>         '.' => 0,
>     },
> };