If the CIFS server joined a domain, and there is a space in the user or group name, the user or group name needs to be entered with double quotes (for example, "@domain users").
By default, all groups are allowed to access the shares.
In the case where a CIFS share has joined a domain, and the domain contains trusted domains, and allow_trusted_domains is set to yes on the CIFS server, if you want to allow/deny users or groups from the trusted domains, the user or group needs to be prefixed with the trusted domain name. Separate the domain and user/group with a double backslash.
For example:
CIFS> share allow sharename
"@domain name\\group name"
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