Eric Haszlakiewicz: > > I'm trying to set up my mail server so it blocks emails that appears to > come from the same address that they are going to. i.e. > From: u...@example.com > To: u...@example.com > > I figured a good way to do this would be with the reject_sender_login_mismatch > which, according to the docs, not only prevents the above case, but can also > avoid any other bogus from addresses from outside my network: > > http://www.postfix.org/uce.html#smtpd_sender_restrictions > reject_sender_login_mismatch > Reject the request when $smtpd_sender_owner_maps specifies an owner for the > MAIL > FROM address, but the client is not (SASL) logged in as that MAIL FROM address > owner; or when the client is (SASL) logged in, but the client login name > doesn't own the MAIL FROM address according to $smtpd_sender_login_maps. > > > Unfortunately, it doesn't seem to work as described. The > smtpd_sender_owner_maps setting doesn't seem to do anything. Setting it > doesn't cause an error, so it seems like it's a valid option. If I set > smtpd_sender_login_maps instead, it *does* do something, but it applies to > non-SASL authenticated clients, which is contrary to what the doc says. > > I managed to get it working in a way that seems to do what I need, but the > mismatch between the docs and the behavior makes me a bit uneasy. Is there > something I'm missing?
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