Hi, someone is trying to send me an email from his GoDaddy acct and he is getting a MAILER-DAEMON back with the following message, any idea what could cause this? I checked the IP that his email is coming from and it seems to be on a blacklist (AHBL), I check it on MXtoolbox
Hi. This is the qmail-send program at p3plwbeout12-02.prod.phx3.secureserver.net.
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.
18.104.22.168 does not like recipient.
Remote host said: 550-Verification failed for <firstname.lastname@example.org>
550-No Such User Here
550 Sender verify failed
Giving up on 22.214.171.124.