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A comment on A startup’s Firebase bill suddenly increased from $25 to $1750 per month. Parent comment

Re:A startup’s Firebase bill suddenly increased from $25 to ... by autotypo on Wednesday May 17, 2017 @09:36AM (#14358240)
Did the sender domains in question have SPF records at any point?

SPF is essentially a self-maintained whitelist.

Blacklists are public and searchable. Something to check after dealing with an infected machine, for example.

[ Parent | on HN ]
Re:A startup’s Firebase bill suddenly increased from $25 to ... by strictnein on Wednesday May 17, 2017 @11:29AM (#14359411)
> SPF is essentially a self-maintained whitelist.

Ironically, commercial spammers have the best SPF records. And DKIM. And all the other goodies.

[ Parent | on HN ]