Hello, I get this error, and do not receive any email from that address.
Do you have any idea how to fix it.
NOQUEUE: reject: RCPT from gandalf.example.com[IP Address]: 504 5.5.2 <gandalf>: Helo command rejected: need fully-qualified hostname; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<gandalf>
Dec 18 17:51:55 www postfix/smtpd[22158]: disconnect from gandalf.example.com[IP Adresss]
