postfix 2.9.6.1 forward all mail to an external mail address

Question

I am trying to tell postfix that all mails to any address should be forwarded to an external email address. My main.cf includes the entry for ``` smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = xshaunm-Q1532N alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = xshaunm-Q1532N, localhost.localdomain, , localhost relayhost = mynetworks = 127.0.0.0/8 [::f…

Accepted Answer

Finally found the answer.

Listing here for posterity.

Add the folowing line to the end of your main.cf file

```
vi /etc/postfix/main.cf

virtual_maps = hash:/etc/postfix/virtual, regexp:/etc/postfix/virtual-regexp
```

Create a file which lists the mail address you want all mails to be sent to

```
vi /etc/postfix/virtual-regexp
```

Add the following:

```
/.+@.+/ forwardingmailaddress@gmail.com
```

add it to postmap

```
postmap /etc/postfix/virtual-regexp
```

you will need to add a virtual file.

```
touch /etc/postfix/virtual
```

now add it to postmap

```
postmap /etc/postfix/virtual
```

postfix 2.9.6.1 forward all mail to an external mail address

Solution

Problem