odoo/addons/portal_anonymous/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_mail_message_portal	mail.message.portal	mail.model_mail_message	portal.group_anonymous	1	0	0	0
3	access_res_partner	res.partner	base.model_res_partner	portal.group_anonymous	1	0	0	0