On Tue, Nov 21, 2023 at 1:57 PM Ralf Hildebrandt via mailop <mailop@mailop.org> wrote: > 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect > 421-4.7.28 our users from spam, mail has been temporarily rate limited. Please > 421-4.7.28 visit > 421-4.7.28 https://support.google.com/mail/?p=UnsolicitedRateLimitError to > 421 4.7.28 review our Bulk Email Senders Guidelines. > s8-20020adfea88000000b0032fba209e8esi6123538wrm.543 - gsmtp (in reply to end > of DATA command)
As I wrote in another thread we see the same error for email sent to us from Amazon's Vendor Central to our Google Workspace email addresses. As such we cannot even use postmaster tools or whatever to figure out what goes wrong (we are neither Google, nor Amazon), only share the pain here with a +1. This has been noticeably happening to us since November 19. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
