======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.6
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP (Active Directory)
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? LDAP AD
- Related log if you're reporting an issue:
====

(Note: this is unrelated to my other post)

Having difficulty whitelisting an e-mail address.  I am seeing the following in /var/log/maillog:

Mar 28 15:39:16 mail postfix/smtpd[11472]: NOQUEUE: reject: RCPT from smtprelay0007.hostedemail.com[216.40.44.7]: 451 4.7.1 <sales@cablewholesale.com>: Recipient address rejected: Intentional policy rejection, please try again later; from=<pete@mycustomer.com> to=<sales@cablewholesale.com> proto=ESMTP helo=<smtprelay.hostedemail.com>

So I have whitelisted @mycustomer.com, but the rejections continue.  I'd prefer to not whitelist the IP address, but I tried it anyway, whitelisting 216.40.44.* ; yet the rejections continued.

How does one go about troubleshooting what is happening here?  Being able to effectively whitelist / blacklist my customer is crucial to our business.

Thanks!