Mail not signed... but not all domain

I have ispconfig setup and it can send signed email normally.
But today, when i try to add new domain and setup DKIM keys,
mail sent from that domain doesn't get signed.
Amavisd showkeys and testkeys are all working and showing that new domain.
But checking the log it doesn't detected.

Both email was sent using Squirrel Mail.

What should i do to fix this?

 

Have you verified the DKIM key is entered into DNS?

 

yes... its what amavis testkeys does and its work perfectly
all keys return pass