wildcard entry for a domain

I am having trouble receiving emails from domain hmm21.com

Jan 18 15:32:58 linode postfix/smtpd[32274]: NOQUEUE: reject: RCPT from mailedge.hyundaigroup.com[203.242.40.11]: 450 4.7.1 <S-KR-EEG-01.hyundai.group>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<S-KR-EEG-01.hyundai.group>
i did add this in helo access

/^*\.hyundai\.group$/ PERMIT

then postmap /etc/postfix/helo_access, restart the postfix ..

still unable to receive emails from this domain. Postfix gives same error

 

at first i kept only
/^hyundai\.group$/ PERMIT

still it was not allowing ...so I added the *

 

made this change

/(.*)hyndai\.group$/ PERMIT