Help setting up DKIM TXT in Bind...

- iRedMail version: 0.9.0
- Store mail accounts in which backend MySQL:
- Web server Apache
- Linux/BSD distribution name and version: Ubuntu 14.04

I can't seem to get DKIM set up in bind correctly.  I keeps failing the amisvid-new test-keys
TESTING#1: dkim._domainkey.example.com  => invalid (public key: not available)

dkim._domainkey.example.com    3600     TXT "v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCX4vyVsGsvgkwHgSBXBr57Mny8Z6LWAHYQ0XPKnITnsMyfbXFU2weeF3tdH+hRNFtnMxTrI26D/0IIhtdxxA8cH9ZbWP1zSiR+Cnge5EqBVHczXB1v6HZAx2m3iJcYUBBskdEE76yict58WATXTS/4vym9mTsucHrkBNXU/jYiBwIDAQAB"

Thanks in advance.....