Postfix tips and troubleshooting commands

Here are some commands I use every day , Of course , Other email Administrators can also use , So I write it down , In case I forget .

List / Print the current mail queue

1. # postqueue –p
3. # mailq

If the queue is too long , have access to tail Pipe reading .

1. # mailq | tail

Clean up the queue

1. # postqueue -f

Deliver a immediately domain.com All messages of domain name

1. # postqueue -s domain.com

Delete all queues

1. # postsuper -d ALL

Delete the specified message

1. # postsuper -d messageid

Re queue the mail or resend the specified mail

1. #postfix -r msgid

Find the mail version

1. #postconf -d mail_version
2. mail_version =2.6.6

You can also check the connection below , There are many examples of this connection and good explanatory documents available , It can be used to configure postfix：Postfix Configuration