On 3/30/23 18:36, Hans-Martin Mosner via mailop wrote:
I try to tackle this by analyzing domains present in mail headers and rejecting
mails accordingly. As you've experienced, talking the Office365 customers into
leaving their crappy host isn't working, so I will have to accept that a
significant part of the traffic from O365 sources is legit, and blocking their
IPs is not an option.
I'm not asking for these people to leave Office365, I just wish Micrsoft would
not take months to remove domains that were created just to send spams.
One of my issue here is french laws are requiring us to stay neutral.
There is something equivalent in Europe regulations :
« REGULATION (EU) 2015/2120 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL » of
25 November 2015
---- Article 3 - Safeguarding of open internet access
[...]
Providers of internet access services shall not engage in traffic management
measures going beyond those set out in the second subparagraph, and in
particular shall not block, slow down, alter, restrict, interfere with, degrade
or discriminate between specific content, applications or services, or specific
categories thereof, except as necessary, and only for as long as necessary, in
order to:
(a) comply with Union legislative acts, or national legislation that complies
with Union law, to which the provider of internet access services is subject, or
with measures that comply with Union law giving effect to such Union legislative
acts or national legislation, including with orders by courts or public
authorities vested with relevant powers;
(b) preserve the integrity and security of the network, of services provided via
that network, and of the terminal equipment of end-users;
(c) prevent impending network congestion and mitigate the effects of exceptional
or temporary network congestion, provided that equivalent categories of traffic
are treated equally.
----
From what I understand, if I set rules on my reputation system to block servers
whose traffic is abnormal, these rules must be applied to all those matching
servers, not just to most of them but the biggest ones.
François
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