I am sure some (most?) of you know this:
1. Your users ask a question anonymously, and enter their notification email
2. The email was set wrong, so the email gets returned
3. your email folder gets a bunch of "failure notice" emails each day.
Of course, I could just set up an email filter client- or server-side, but maybe someone has a better idea to prevent the problem from the beginning?
Hi. This is the qmail-send program at ***
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too long.