Vordoo wrote on Sun, 16 May 2021 11:28 +00:00: > On 5/16/21 6:48 AM, אורי wrote: > > May 16 04:00:01 www postfix/smtp[1364]: 79264BD01C: > > to=<webmaster+root-cron...@speedy.net > > <mailto:webmaster%2broot-cron...@speedy.net>>, > > relay=aspmx.l.google.com[142.250.27.27]:25, delay=0.13, > > delays=0.02/0.01/0.02/0.07, dsn=5.7.1, status=bounced (host > > aspmx.l.google.com[142.250.27.27] said: 550-5.7.1 [157.245.76.159 18] > > Our system has detected that this message is 550-5.7.1 _*likely suspicious > > due to the very low reputation *_of the sending IP 550-5.7.1 address. To > > best protect our users from spam, the message has been 550-5.7.1 blocked. > > Please visit 550 5.7.1 https://support.google.com/mail/answer/188131 for > > more information. bo27si207201edb.287 - gsmtp (in reply to end of DATA > > For a long time now it's becoming a real nuisance to self host email > servers. You need a static IP with clean / good reputation + nspf, > dkim, dmarc and all that
At last count: MTA-STS, MX, SPF, DMARC, TLS-RPT, DKIM, CSA, SRV, and a few "prove to $thirdparty that I own this domain" records for various third parties. And even then, a new outbound IP requires a slow warm-up etc.. It's definitely a lot easier to use a relayhost. > while most your mail will be routed trough google anyway. It's > probably only worth it for big setups or educational purposes. _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
