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At this point programs programs on your system will be able to start sending emails. |
Setup Mail Delivery Account
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Is this really necessary? |
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sudo addgroup --gid 3001 mailadmin
sudo useradd -d /home/mailadmin -m -g mailadmin -u 3001 -c "Mail Admin catch-all" -s /bin/false mailadmin |
Basics of Postfix
Default installations of Postfix stores all messages in an mbox file. To see what directory it is using use the command,
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sudo postconf mail_spool_directory
mail_spool_directory = /var/mail # This is the default directory. |
The newer maildir format is now recommened so follow the next section to change to maildir.
Setup Mail Delivery Account
The overall consensus is to use the maildir format with a mail directory being used for each user.
main.cf
Backup /etc/postfix/main.cf in case something goes wrong. All the subsequent commands modify main.cf,
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sudo cp /etc/postfix/main. |
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cf /etc/postfix/main.cf.v0.0.bck |
The following command will do make the following changes,
- Set emails to the users home directory under a subfolder called Maildir.
- The trailing slash indicating a folder, will configure Postfix to use the maildir format. Note, if you forge the slash, a file called maildir will be generated in mbox format.
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sudo postconf -e 'home_mailbox = Maildir' |
| Note |
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This sets mail in /home/username/Maildir and the MDA (Mail Delivery Agent) must be set to the same path. |
If we want multiple domains, for example, earth.com, just add it to the list by editing /etc/postfix/main.cf and adding earth.com to the mydestination line.
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Look up how to do via postconf -e here for consistency. |
More commands,
/' |
In most cases, your system is being used to send email outbound and not receive email or deliver the emails locally to the system.
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sudo postconf -e "inet_interfaces = loopback-only" # receive no mail from the network, and do not deliver any mail locally |
Reverse DNS
Reverse DNS unless delegated is managed by the ISP provider. Generally this means whoever manages the IP address of your server.
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