When trying to scan to email using hp mfps (hp 4100), it fails on the HELO command. The mfp is in the dns,
Jun 25 13:06:16 zimbra-1 postfix/smtpd: NOQUEUE: reject: RCPT from hunt_hp4100.print.ie[10.4.254.11]: 504 <10.4.254.11>: Helo command rejected: need fully-qualified hostname; from=<Printer.User@staff.ie> to=<email@example.com> proto=SMTP helo=<10.4.254.11>
Printer is in our dns server.
any help welcomed.