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) […]
This can get quite important when your mail server is blacklisted, or if you somehow want to simply change the outgoing IP address. First of all, check that you DO have another ip address on another interface at the server. Either by ifconfig or anything else. To change the outgoing IP on a postfix mail […]