Mail Server : Virtual Domain Setting2024/05/30

Configure for Virtual Domain to send an email with another domain name different from original domain.
This example is for the case you use OS user accounts.

For example,
present domain name ⇒ srv.world
new domain name ⇒ virtual.host
a User [ubuntu] has an email address [ubuntu@mail.srv.world],
a User [noble] has an email address [ubuntu@mail.virtual.host],
the user [noble] uses the same name for before [@] with [ubuntu].

[1]

Configure Virtual Domain.

root@mail:~#

vi /etc/postfix/main.cf

# add to last line

virtual_alias_domains = virtual.host
virtual_alias_maps = hash:/etc/postfix/virtual

root@mail:~#

vi /etc/postfix/virtual

# add

ubuntu@mail.virtual.host noble

root@mail:~#

postmap /etc/postfix/virtual

root@mail:~#

systemctl reload postfix

[2]	Set new account on Email client and verify possible to send emails normally.

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