Prevent [email protected] bounces with sSMTP and Sendgrid

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http://serverfault.com – I have a vps setup that only needs to send e-mail, not recieve. In practice this works now that we have setup sSMTP. The only thing that's troubling now is that something is sending e-mails to [email protected], and that domain.com (the hostname of my vps) does not have pop3 or imap mailboxes. And so it in Sendgrid it is bounced with the error 'Connection refused'. I have changed /etc/aliases to say: # See man 5 aliases for format postmaster: [email protected] root: [email protected] And have setup /root/.forward and /root/.forwards (to be sure), it just reads: info (HowTos)