==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.8
- Linux/BSD distribution name and version: ubuntu 18.04 LTS
- 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.
====

My experience with running iRedMail is Less than a year.  I ran 0.9.7 until yesterday and broke it trying to upgrade to 0.9.8.

Has anyone else had this issue: I made a fresh install on a newly deployed vps.  I got everything running and tailed the logs and was seeing bad behavior in the mail.log concerning clamav.  It dovecot couldn't connect to it.  So I checked the status and got this:

root@mail:/var/log# service clamav-daemon status
● clamav-daemon.service - Clam AntiVirus userspace daemon
   Loaded: loaded (/lib/systemd/system/clamav-daemon.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/clamav-daemon.service.d
           └─extend.conf
   Active: failed (Result: exit-code) since Fri 2018-06-08 22:26:22 UTC; 2h 46min ago
     Docs: man:clamd(8)
           man:clamd.conf(5)
           http://www.clamav.net/lang/en/doc/
  Process: 679 ExecStart=/usr/sbin/clamd --foreground=true (code=exited, status=1/FAILURE)
  Process: 666 ExecStartPre=/bin/chown clamav /run/clamav (code=exited, status=0/SUCCESS)
  Process: 635 ExecStartPre=/bin/mkdir /run/clamav (code=exited, status=0/SUCCESS)
Main PID: 679 (code=exited, status=1/FAILURE)

Jun 08 22:26:21 mail systemd[1]: Starting Clam AntiVirus userspace daemon...
Jun 08 22:26:22 mail systemd[1]: Started Clam AntiVirus userspace daemon.
Jun 08 22:26:22 mail clamd[679]: ERROR: Parse error at line 90: Unknown option AllowSupplementaryGroups
Jun 08 22:26:22 mail clamd[679]: ERROR: Can't open/parse the config file /etc/clamav/clamd.conf
Jun 08 22:26:22 mail systemd[1]: clamav-daemon.service: Main process exited, code=exited, status=1/FAILURE
Jun 08 22:26:22 mail systemd[1]: clamav-daemon.service: Failed with result 'exit-code'.

I went in and commented out line 90 of /etc/clamav/clamd.conf:

# AllowSupplementaryGroups true

I ran service clamav-daemon start and it started up.

So my question is there a syntax error or is AllowSupplementaryGroups a bad parameter? (is it a bug?)

Thanks for making iRedMail available for use.