This question (https://developer.salesforce.com/forums/?id=906F0000000BSEHIA4) seemed closest to what I'm looking for, but the answer doesn't make clear if organization-wide address can be used or what the from-address looks like to the customer.
1 resposta
Yes, that is exactly what Email Relay is for. After it is enabled, any email sent from Salesforce, whether sent manually by a user, or automatically via a workflow rule email alert, auto response rule, etc, will be routed through your mail server.
We have this enabled in our org. Before email relay was enabled, emails used to be received and show up something like "From support@example.com via xyz_123@salesforce.com" as you described. After enabling it, it just says "From support@example.com".
