How can i disable Postgrey for a domain or mailadress?

You can set a domain or a mail recipients on the whitelist.

Postgrey has its own whitelist under /etc/postgrey/

• whitelist_clients → here can set complete domains
• whitelist_recipients → here can you set email-addresses

Take a look at the files, there are some examples in it. After your changes restart Postgrey: <cli> # /etc/init.d/postgrey restart </cli>