Automation of GPG processing

[Stas Rirak]

Hello,

I need to automate an encryption process. When I execute the command
below to process the encryption I am getting the prompt from GPG asking
if I really sure that this key belong to the recipient. 

gpg --output [output.gpg] --recipient [public_key_name --encrypt
[file_to_encrypt.txt]

After that I need to enter "Y" in order to continue. But, it should be a
fully automated process. What should I do, so it will not ask me any
quesions?

Thank you in advance,
Stas