gmail.com started failing messages from domains which are correctly setup for SPF (and have been for some years):
550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF [nagler.me] with ip: [139.177.203.52] = did not pass 550-5.7.26 550-5.7.26 $ dig +short txt nagler.me "v=spf1 a mx ip4:139.177.203.52 include:_spf.google.com -all" Sending to (paid) Google Workspace domains works fine. Nothing has changed on our end, and failures only started this morning. Any ideas? Thanks, Rob
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