On Sun, 11 Feb 2024, Sebastian Nielsen via mailop wrote:
because SPF is too easy to forge.)
Wrong. When a shared space is used, its up to that particular space,
to enforce so customers cannot use other customer’s email addresses.
Since some of these shared spaces have demonstrated that they
aren't interested in keeping spam from leaving their spaces,
why should recipients trust them to get this right ?
Yes, their customers should be able to trust them to stop such forgeries
but the little I know about such contracts doesn't inspire me.
Otherwise I might suggest that those customers put in clauses guaranteeing
no spam from addresses associated with with the customer's mail.
--
Andrew C. Aitchison Kendal, UK
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