The answer is here:
Quote:
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not allowed because none of user's groups are listed in AllowGroups
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You're allowing only members of the
wheel group to ssh in. It might be time to rethink your security scheme, BTW. You have a service account user who you're allowing ssh access to (as DutchDaemon noted), and you're allowing wheel members to ssh in?
How about instead creating a separate account for transferring files over ssh (or whatever it is you're doing) and creating a sshguys group,
and changing the sshd_config directive to utilize that group instead of wheel.