======== Required information ====
- iRedMail version: 0.8.7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: 14.04 x64
- Related log if you're reporting an issue:

Nov 22 07:40:12 mail cbpolicyd[2305]: module=Greylisting, action=defer, host=xxx.xx.xxx.xxx, helo=mail-wi0-f193.google.com, from=name.surname@gmail.com, to=name.surname@domain.eu, reason=greylisted
Nov 22 07:40:12 mail postfix/smtpd[2685]: NOQUEUE: reject: RCPT from mail-wi0-f193.google.com[xxx.xx.xxx.xxx,]: 451 4.7.1 <name.surname@domain.eu>: Recipient address rejected: Greylisting in effect, please come back later; from=<name.surname@gmail.com> to=<name.surname@domain.eu proto=ESMTP helo=<mail-wi0-f193.google.com>
====

I got the following error

Recipient address rejected: Policy Rejection- Please try later.;

an how-to says the way to fix this issue:

Just remove greylist in /etc/policyd.conf

vi /etc/policyd.conf

change greylisting like this:

GREYLISTING=0

restart policyd

/etc/init.d/policyd restart

Unfortunately I don't have policyd.conf file. How can I fix this issue?