Il Venerdì 30/03/2018 08:05 Dominic Raferd ha scritto:
On 30 March 2018 at 06:51, Lorenzo Petracchi
<lorenzo.petrac...@unifi.it> wrote:
Is there a reliable way to reject incoming mails with a spoofed e-mail
address?
Please clarify what you mean.
In the last few weeks our e-mail users are receiving many messages with
their own address as From header.
I understand that there are many legitimate reasons why the From header
is free but I would like to understand if it is possible and if it makes
sense to reject incoming mail that contains addresses in the form
al...@mydomain.it in the header field when the sender is not an our SASL
authenticated SMTP sender or when they do but does not own that address.
Lorenzo
