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Is it possible they have broken your DKIM key? If so they can send email signed as coming from you without needing your Sendgrid credentials. Remove all your Se
by salusinarduis 7y ago
Is it possible they have broken your DKIM key? If so they can send email signed as coming from you without needing your Sendgrid credentials. Remove all your Sendgrid DNS records, and make sure you DKIM key is using 2048 bit modulus or higher.