Hello,
Here is an error message that I was asked about earlier today:
Here is an error message that I was asked about earlier today:
The person received the error because they were trying to send the e-mail through one of my qmail smtp relays, but their IP address was not in the allow list for relaying e-mail.The server response was: sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)