Is it plausible that Google had a temporary issue reaching your DNS
servers?
On 2024-02-27 16:30, Rob Nagler via mailop wrote:
gmail.com [1] 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 [2]]
with ip:
[139.177.203.52] = did not pass 550-5.7.26 550-5.7.26
$ dig +short txt nagler.me [2]
"v=spf1 a mx ip4:139.177.203.52 include:_spf.google.com [3] -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
Links:
------
[1] http://gmail.com
[2] http://nagler.me
[3] http://spf.google.com
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