Faruque Ahmed : MCP, MCSA, MCSE, MCTS, MCIT, CCNA, OCA, OCP, GCP

mail centos 7

mail server on centos 7

[root@mail ~]# vi /etc/selinux/config

# This file controls the state of SELinux on the system.# SELINUX= can take one of these three values:# enforcing - SELinux security policy is enforced.# permissive - SELinux prints warnings instead of enforcing.# disabled - No SELinux policy is loaded.SELINUX=disabled#SELINUX=enforcing# SELINUXTYPE= can take one of three values:# targeted - Targeted processes are protected,# minimum - Modification of targeted policy. Only selected processes are protected.# mls - Multi Level Security protection.SELINUXTYPE=targeted

[root@mail ~]# vi /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4::1 localhost localhost.localdomain localhost6 localhost6.localdomain6192.168.81.191 mail.worldcm.net mail
# nmtuiâ Set system hostname â Hostname mail.worldcm.net________________________ â <OK> <Cancel>

# yum -y install quota*

[root@mail ~]# mount | grep ' / '

/dev/mapper/centos-root on / type xfs (rw,relatime,attr2,inode64,noquota)

# cp /etc/default/grub /etc/default/grub.ORG

[root@mail ~]# vi /etc/default/grub

GRUB_TIMEOUT=5GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"GRUB_DEFAULT=savedGRUB_DISABLE_SUBMENU=trueGRUB_TERMINAL_OUTPUT="console"GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet rootflags=uquota,pquota"GRUB_DISABLE_RECOVERY="true"
[root@mail ~]# cp /boot/grub2/grub.cfg /boot/grub2/grub.cfg.orig[root@mail ~]# grub2-mkconfig -o /boot/grub2/grub.cfg

**The path on some OSs has been changed to E F I [ EFI BOOT ] **

# /boot/efi/EFI/centos/grub.cfg

[root@mail ~]# cp /boot/efi/EFI/centos/grub.cfg /boot/efi/EFI/centos/grub.cfg.ORG

[root@mail ~]# grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

# reboot

[root@mail ~]# mount | grep ' / '

/dev/mapper/centos-root on / type xfs (rw,relatime,attr2,inode64,usrquota,prjquota)

Then Go to webmin----->

1. Disk and Network --->/ (Root filesystem) or home ---> Enable user & groups quotas ---> save

2. Disk Quotas ---->/ (users) / (groups) ---> ok

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