On 05/29/2018 06:31 AM, Rupert Gallagher wrote:
We reject e-mails from both dynamic and unknown domains, and feed the firewall with their CIDRs. The resulting blacklist includes 919 CIDRs, and keeps growing by itself. It is all automatic. I think ISPs should do this filtering, even if the EFF would scream like Donal Duck in favour of net neutrality.
I thought it was considered best practice for ISPs to do egress SMTP and NetBIOS filtering, and ideally ingress NetBIOS filtering.
I am okay with this being the default as long as it's well communicated and there is a relatively easy way for subscribers to opt out of it.
-- Grant. . . . unix || die
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