Whitelisting single (envelope) senders

[Nikolaos Milas]

Hello,

I am running amavis 2.8.0 with Postfix 2.9.4.

I know I can whitelist domains using:

    read_hash(\%whitelist_sender, '/path/to/file');

but in this case it seems we cannot whitelist (in the file) specific 
full addresses, but only domains/subdomains.

How can we whitelist particular full addresses as envelope senders?

Please advise.

Thanks,
Nick