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Attack against postfix allows sending of spoofed mail
(www.postfix.org)
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Enjoy!
If I understand this correctly someone can use Microsoft/other commercial services to email a domain running postfix and make it comes from anyone on the initial service to anyone on the postfix domain. Nice. Good for targeted attacks and probably not bad to get some spam out.
Merry Christmas postfix.
Mailcow tracking bug, they claim the fix in the parent may cause the blocking of legimate traffic from incorrectly implemented smtp servers.