==== Required information ====
- iRedMail version (check /etc/iredmail-release):  0.9.7
- Linux/BSD distribution name and version: Ubuntu 16.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi there,

Im having an issue with iRedApd which I cannot solve

Yesterday I added a new domain and some accounts to my mail server and one of my accounts was complaining about the rejection policy. I decided to copy the default_settings.py file to the /opt/ireadapd/settings.py and all i changed was the greylisting setting to True for training, and restarted iredapd. I never knew anything was wrong until an hour ago when people started complaining that no mail was sending and receiving.

I immediately removed the new settings file and restarted iredapd, but now the problem is persisting.. I have subsequently disabled iredapd in my postfix config for now so that mail can work, but would appreciate some help getting the problem solved..

Heres the error i was receiving in my mail logs:

Mar  6 11:46:16 mail postfix/smtpd[4241]: warning: connect to 127.0.0.1:7777: Connection refused
Mar  6 11:46:16 mail postfix/smtpd[4241]: warning: problem talking to server 127.0.0.1:7777: Connection refused
Mar  6 11:46:17 mail postfix/smtpd[4241]: warning: connect to 127.0.0.1:7777: Connection refused
Mar  6 11:46:17 mail postfix/smtpd[4241]: warning: problem talking to server 127.0.0.1:7777: Connection refused
Mar  6 11:46:17 mail postfix/smtpd[4241]: NOQUEUE: reject: RCPT from mail-sn1nam02lp0017.outbound.protection.outlook.com[216.32.180.17]: 451 4.3.5 <email@domain>: Recipient address rejected: Server configuration problem; from=<user@opm50.hbs.edu> to=<email@domain> proto=ESMTP helo=<NAM02-SN1-obe.outbound.protection.outlook.com>
Mar  6 11:46:17 mail postfix/smtpd[4241]: disconnect from mail-sn1nam02lp0017.outbound.protection.outlook.com[216.32.180.17] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6
Mar  6 11:46:43 mail postfix/smtpd[4206]: timeout after RSET from unknown[196.211.110.250]
Mar  6 11:46:45 mail postfix/master[4058]: terminating on signal 15

nmap localhost shows no port 7777, i assume this could be part of the issue, but nothing was ever changed to remove this:
Starting Nmap 7.01 ( https://nmap.org ) at 2018-03-06 11:59 SAST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000010s latency).
Other addresses for localhost (not scanned): ::1
rDNS record for 127.0.0.1: mail.domain.com
Not shown: 985 closed ports
PORT      STATE SERVICE
24/tcp    open  priv-mail
25/tcp    open  smtp
80/tcp    open  http
110/tcp   open  pop3
143/tcp   open  imap
443/tcp   open  https
587/tcp   open  submission
783/tcp   open  spamassassin
993/tcp   open  imaps
995/tcp   open  pop3s
3306/tcp  open  mysql
9998/tcp  open  distinct32
10024/tcp open  unknown
10025/tcp open  unknown
20000/tcp open  dnp

service iredapd restart works fine, but in the status the below shows:
root@mail:~# service iredapd status
● iredapd.service - LSB: Control iredapd daemon.
   Loaded: loaded (/etc/init.d/iredapd; bad; vendor preset: enabled)
   Active: active (exited) since Tue 2018-03-06 11:37:19 SAST; 23min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3440 ExecStart=/etc/init.d/iredapd start (code=exited, status=0/SUCCESS)

Mar 06 11:37:19 mail systemd[1]: Starting LSB: Control iredapd daemon....
Mar 06 11:37:19 mail iredapd[3440]: Starting iredapd ...
Mar 06 11:37:19 mail iredapd[3440]: Traceback (most recent call last):
Mar 06 11:37:19 mail iredapd[3440]:   File "/opt/iredapd/iredapd.py", line 22, in <module>
Mar 06 11:37:19 mail iredapd[3440]:     import settings
Mar 06 11:37:19 mail iredapd[3440]: ImportError: No module named settings
Mar 06 11:37:19 mail systemd[1]: Started LSB: Control iredapd daemon..