On Tue, Apr 24, 2018 at 08:35:17PM +0200, Fredrik Korsbäck <hugge@nordu.net> wrote a message of 28 lines which said:
Surprised this hasnt "made the news" over at this list yet.
It may be also because NANOG email is handled by Google, who broke its antispam: <nanog@nanog.org>: host aspmx.l.google.com[2a00:1450:400c:c08::1a] said: 550-5.7.1 This message does not have authentication information or fails to pass 550-5.7.1 authentication checks. To best protect our users from spam, the 550-5.7.1 message has been blocked. Please visit 550-5.7.1 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.1 information. v20-v6si12240130wrb.82 - gsmtp (in reply to end of DATA command)