On 26.07.17 02:48, Rupert Gallagher wrote:
+1 to remove that clause from the RFC.
I don't see any reason... btw you'd need to change it to MUST NOT for all
to stop (which is unlikelly to happen).
When a mail arrives without mid, either the sender did not use a real SMTP
server or tried to hide it. We have a custom SA rule for it. We also
reject upfront any mid with a syntax error, or whose domain does not have
a rdns (eg. @localhost.localdomain or @test.com).
nobody forbids you from doing this. SA has rules for both missing and added
Message-ID: header. you are welcome to reject based on anything...
Sent from ProtonMail Mobile
seems that protonmail mobile unwraps the lines, which makes quoted text very
hard to read. Are you able to turn it off?
On Tue, Jul 25, 2017 at 5:20 PM, John Hardin <jhar...@impsec.org> wrote:
On Tue, 25 Jul 2017, Rupert Gallagher wrote: > Before bothering with body spam, make
sure the header is clear. The > specific email should have been rejected upfront,
because the foreign > sender's message-id pretends to originate from the recipient's
smtp > server. That's potentially valid. If a MTA receives a message that has no message
ID it is valid to add one from the MTA's domain. -- John Hardin KA7OHZ
http://www.impsec.org/~jhardin/ jhar...@impsec.org FALaholic #11174 pgpk -a
jhar...@impsec.org key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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