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def Create(self, name, admin, crypted_password,
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langs=None, emailhost=None):
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if Utils.list_exists(name):
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raise Errors.MMListAlreadyExistsError, name
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# Validate what will be the list's posting address. If that's
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# invalid, we don't want to create the mailing list. The hostname
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# part doesn't really matter, since that better already be valid.