What domain name to use in outbound mail<\/p>\n
The myorigin parameter specifies the domain that appears in mail that is posted on this machine. The default is to use the local machine name, $myhostname, which defaults to the name of the machine. Unless you are running a really small site, you probably want to change that into $mydomain, which defaults to the parent domain of the machine name.<\/p>\n
For the sake of consistency between sender and recipient addresses, myorigin also specifies the domain name that is appended to an unqualified recipient address.<\/p>\n
Examples (specify only one of the following):<\/p>\n
\/etc\/postfix\/main.cf:
myorigin = $myhostname (default: send mail as “user@$myhostname”)
myorigin = $mydomain (probably desirable: “user@$mydomain”)<\/p>\n
What domains to receive mail for<\/p>\n
The mydestination parameter specifies what domains this machine will deliver locally, instead of forwarding to another machine. The default is to receive mail for the machine itself. See the VIRTUAL_README file for how to configure Postfix for hosted domains.<\/p>\n
You can specify zero or more domain names, “\/file\/name” patterns and\/or “type:table” lookup tables (such as hash:, btree:, nis:, ldap:, or mysql:), separated by whitespace and\/or commas. A “\/file\/name” pattern is replaced by its contents; “type:table” requests that a table lookup is done and merely tests for existence: the lookup result is ignored.<\/p>\n
IMPORTANT: If your machine is a mail server for its entire domain, you must list $mydomain as well.<\/p>\n
Example 1: default setting.<\/p>\n
\/etc\/postfix\/main.cf:
mydestination = $myhostname localhost.$mydomain localhost<\/p>\n
Example 2: domain-wide mail server.<\/p>\n
\/etc\/postfix\/main.cf:
mydestination = $myhostname localhost.$mydomain localhost $mydomain<\/p>\n
Example 3: host with multiple DNS A records.<\/p>\n
\/etc\/postfix\/main.cf:
mydestination = $myhostname localhost.$mydomain localhost
www.$mydomain ftp.$mydomain<\/p>\n
Caution: in order to avoid mail delivery loops, you must list all hostnames of the machine, including $myhostname, and localhost.$mydomain. <\/p>\n","protected":false},"excerpt":{"rendered":"