On 2023/10/11 15:05, Giovanni Bechis via mailop wrote: > Hi, > starting from 02/2024 Gmail will require authenticated email for senders who > send 5,000 or more messages a day to Gmail accounts. > However, authenticated email requirements seems to have started today, in the > past days those email messages where temporary rejected, starting from today > I have the following error message: > 550-5.7.26 This mail has been blocked because the sender is > unauthenticated.5.7.26 Gmail requires all senders to authenticate with either > SPF or DKIM.5.7.26 5.7.26 Authentication results:5.7.26 DKIM = did not > pass5.7.26 SPF [domain.tld] with ip: [1.2.3.4] = did not pass5.7.26 5.7.26 > To mitigate this issue, please visit Gmail's authentication guide5.7.26 for > instructions on setting up authentication:5.7.26 > https://support.google.com/mail/answer/81126#authentication > z20-20020a05600c0a1400b004068c7a951csi7296094wmp.167 - gsmtp
I've had this start recently (a couple of weeks maybe?) to @gmail.com addresses (though not other google-hosted domains, e.g. @googlemail.com, yet) - sending far less than 5k/day their way. _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
