Adding DKIM Key In DNS

[Leo51]

Hello,

I am trying to get OpenDkim signature working on my server but I anm having a huge problem abd been at it for more that a month.

Can this question be clarified.

The dns zone file are located in two paths:
/var/cache/bind/
/etc/ispcp/bind/working/

Which of these two paths should I be adding my key?

_domainkey.domain.com. IN TXT "t=y; o=-;"

mail._domainkey.cakafete.com. IN TXT "v=DKIM1; k=rsa; t=y; p=MIGfM.....FhyktqxASXHbn7"

Many Thanks
Fred