Install Postfix
$ sudo apt-get install postfix
$ sudo apt-get install postfix
After Install check postfix status
$ sudo service postfix status
$ sudo service postfix status
Further check that postfix is running a server on port 25 with the netstat command
$ sudo netstat -ltnp | grep 25
Output :
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1926/master tcp6 0 0 ::1:25 :::* LISTEN 1926/master
Verify DNS settings of domain
$ sudo dig example.com mx
Configure postfix to forward mails
Check the path of config folder using postconf command
$ postconf | grep config_directory
config_directory = /etc/postfix
Edit the main.cf file and add following lines at end if it
virtual_alias_domains = mydomain.com anotherdomain.com
virtual_alias_maps = hash:/etc/postfix/virtual
Now Create /etc/postfix/virtual file and add emails to forwad along with destination mails like:
myemail@domain.com destination@gmail.com
othermail@domain.com otherdes@yahoo.com
First mail address receive emails, and the second address would forward the emails.
For all forward emails use following lines
@mydomian.com des@gmail.com
After this save file and close it and run following commands
$ postmap /etc/postfix/virtual
$ sudo service postfix reload.
Now try to send an email from somewhere to the address on yourdomain and the same mail forwarded to other account.
