==== Required information ====
- iRedMail version: 0.9.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: UBUNTU 14.04
- Related log if you're reporting an issue:
Feb 12 11:43:59 mail postfix/smtpd[2239]: connect from mail-lb0-f171.google.com[209.85.217.171]
Feb 12 11:44:00 mail cbpolicyd[2032]: module=Greylisting, action=defer, host=209.85.217.171, helo=mail-lb0-f171.google.com, from=stefan.crnjako$
Feb 12 11:44:00 mail postfix/smtpd[2239]: NOQUEUE: reject: RCPT from mail-lb0-f171.google.com[209.85.217.171]: 451 4.7.1 <info@jungletribe.com>$
Feb 12 11:44:00 mail postfix/smtpd[2239]: disconnect from mail-lb0-f171.google.com[209.85.217.171]
====

Hi, everything worked fine until I did apt-get update and upgrade. It upgraded spamassasin postfix and dovecot I think... When I was asked for some configuration by postfix, I selected no config, which was recommended in case I wanted to leave things as is. As soon as I did that, mail stopped getting to the mailbox and started being rejected for greylisting. I didn't experience this before. What are the downsides, what if legitimate mail ends up not being delivered? What might went wrong with upgrade?

Thanks in advance.

EDIT: If nothing else, can I at least shorten delay?

*************************** 1. row ***************************
                     ID: 1
               PolicyID: 3
                   Name: Greylisting Inbound Emails
         UseGreylisting: 1
         GreylistPeriod: 240
                  Track: SenderIP:/24
   GreylistAuthValidity: 604800
 GreylistUnAuthValidity: 86400
       UseAutoWhitelist: 1
    AutoWhitelistPeriod: 604800
     AutoWhitelistCount: 100
AutoWhitelistPercentage: 90
       UseAutoBlacklist: 1
    AutoBlacklistPeriod: 604800
     AutoBlacklistCount: 100
AutoBlacklistPercentage: 20
                Comment: 
               Disabled: 0
*************************** 2. row ***************************
                     ID: 2
               PolicyID: 8
                   Name: no_greylisting
         UseGreylisting: 0
         GreylistPeriod: NULL
                  Track: SenderIP:/32
   GreylistAuthValidity: NULL
 GreylistUnAuthValidity: NULL
       UseAutoWhitelist: 0
    AutoWhitelistPeriod: NULL
     AutoWhitelistCount: 0
AutoWhitelistPercentage: 0
       UseAutoBlacklist: 0
    AutoBlacklistPeriod: NULL
     AutoBlacklistCount: 0
AutoBlacklistPercentage: 0
                Comment: NULL
               Disabled: 0