i tested mail relay with a friend of my. But now he's grey listed and i can't send mail to him and he can't mail to me. i see in the log file that he's greylisted. How can i remove him from the greylist???
When a mailserver wants to send a mail to you through your fw, the fw says that the mailserver should try again in a little while. Then when the mailserver tries again the mail is let through.
This is done to prevent spam-servers to send mail to you, and it works since most spam-senders don't resend mails.
