Posted by mike Filed Under Commands with Comments Off
postqueue
This command has several uses.
Flush the Queue
# postqueue -f
Print the Contents of the Queue
# postqueue -p
Deliver Queued Mail for a Domain
# postqueue -s myexample.com
Though you may not have mail in the queue run these commands so you are familiar with them.
Posted by mike Filed Under Commands with Comments Off
postlog
This command allows an external program to write to the mail log. This is what you would use if you had a shell script that you wanted to write messages to the mail log.
# postlog testing postlog
postfix/postlog: testing postlog
Now check the log.
# cat /var/log/mail.log | grep testing
Jul 3 23:49:02 testub postfix/postlog: testing postlog
Send a “testing” message and then review the log.
Posted by mike Filed Under Commands with Comments Off
postmap
The purpose of this command is to build indexed maps from flat files. In the example a virtual_mailbox_recipients database is created.
Create this file /etc/postfix/virtual_mailbox_recipients with these contents.
tom.smith@example.com tomsmith
jane.smith@example.com jane
# postmap hash:/etc/postfix/virtual_mailbox_recipients
Posted by mike Filed Under Commands with Comments Off
postcat
You can use postcat to view the contents of mail in the queue. First you will need to see a list of mail queue IDs with mailq command:
mailq
A48B0794BF3
Once you have the queue ID you may view the contents with:
# postcat -q A48B0794BF3
Run the mailq command to see if any mail is in the queue. Try to locate queue IDs. If there is no mail in the queue then try to pick out mail IDs in the /var/mail directory.
cat /var/mail/username
Posted by mike Filed Under Commands with Comments Off
postalias
This command is used to create the alias map.
# postalias hash:/etc/postfix/aliases
You will have to create the /etc/postfix/aliases file in order to run the command. Note: the /etc/aliases file is created by default and you can use this file by running the command newaliases.
Edit your /etc/aliases file and enter an email address for root and then run the command:
newaliases
Here is an example entry in /etc/aliases:
root: john
