Setup: group with private Group Guidelines.
Situation: Non-member sends message to the help address, gets back instructions that include sending email to group+guidelines address. Non-member sends email to that address and receives a copy of the group guidelines via email, which they should not be privy to.
Best solution IMO: the automated help message does not include instructions for getting the guidelines if the person is a non-member and the guidelines are private.
Alternate solution: keep help message the same but if a non-member sends a message to the guidelines address send back an error message ("this group's guidelines are only available to group members" yada yada).
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J

Messages are the sole opinion of the author, especially the fishy ones.
My humanity is bound up in yours, for we can only be human together. - Desmond Tutu

Preferably both. The private guidelines should be refused to anyone who tries the GROUP+guidelines@... address and is not a member, even when this address is not advertised in the automated help message.

  - Mark (not that Mark, a lesser Mark).

On Tue, Mar 24, 2020 at 11:10 AM, Mark Irving wrote:

Preferably both.

Agreed.

 
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J

Messages are the sole opinion of the author, especially the fishy ones.
My humanity is bound up in yours, for we can only be human together. - Desmond Tutu