You Have Just Deployed DMARC to the Your-Company

Multiple Choice

You have just deployed DMARC to the your-company.com domain. The next day, you start receiving reports that some automated mail from one of your vendors, sending as you, is not being delivered to its recipients. You need to maintain secure email best practices. You received the following SPF, DKIM and DMARC records: v=spf1 a mx ip4 64.233.167.99 include:_spf.google.com -all v=DKIM1;p=MIGfMA0GCSqGSlb3DQEBAQUAA4GNADCBiQKBgQDelhtCv3vUinyhKiKtZ8efjHGGo8gE1T+o7gLrvo6yRtdz9lCe6Fz5sgz0WYFW5nCV4DmaTcS v=DMARC1;p=rekect;rua=mailto:[e-mail] ruf=mailto:[e-mail]; fo=1 You need to enable your vendor to resume sending mail on your behalf. What should you do?

A) Change your DMARC record from p=reject to p=none.
B) Change your SPF record from -all to ~all.
C) Add the vendors mail servers to your SPF record.
D) Instruct your vendor to set up your DKIM signature on their systems.