Fix Incoming Mail Delay With Postfix

In our case, we were using postfix via iRedMail and every incoming mail had a delay around 7 minutes. The problem was fixed by disabling the chroot operation in the settings.

Edit the file /etc/postfix/master.cf

It probably looks like this
=============================================================
service type  private unpriv  chroot  wakeup  maxproc command
              (yes)   (yes)   (yes)   (never) (100)
=============================================================
smtp      inet  n       -       -       -       -       smtpd
Change it to

 =============================================================
service type  private unpriv  chroot  wakeup  maxproc command
              (yes)   (yes)   (yes)   (never) (100)
=============================================================
smtp      inet  n       -       n       -       -       smtpd
Now restart and reload the postfix mail server and you’re good to go.
[root@mail ~]# /etc/init.d/postfix restart
Shutting down postfix:                                     [  OK  ]
Starting postfix:                                          [  OK  ]
 [root@mail ~]# /etc/init.d/postfix reload
Reloading postfix:                                         [  OK  ]
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