I'm running Ubuntu 12 Precise Pangolin and am trying to configure my server to catchall mail sent to it and forward it to my gmail address. I've been trying lots of examples online like editing my main.cf file which looks like this:

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 = destiny
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = destiny, localhost.localdomain, localhost
relayhost = smtp.sendgrid.net
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 51200000
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all

In my /etc/postfix/virtual I have:

@mydomain.com [email protected]
@myotherdomain.com [email protected]

Which isn't working when I email [email protected] or [email protected].

So I got the recommendation to add the following to my /etc/alias:

postmaster:root
root:[email protected]

restarted postfix, and tried emailing [email protected] or [email protected] but it still won't send.

Does anyone have any idea what I'm doing wrong here? I'd appreciate any help.