Hello I cannot seem to get my postfix to accept incoming mail. I can send fine but I cannot receive. I cannot find any errors in 'maillog' or in 'messages'. Here is an output from postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases allow_percent_hack = no append_dot_mydomain = no best_mx_transport = local command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 html_directory = no ignore_mx_lookup_error = yes mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain mydomain = example.com myhostname = maillist.example.com mynetworks_style = subnet myorigin = maillist.example.com newaliases_path = /usr/bin/newaliases.postfix readme_directory = /usr/share/doc/postfix-2.2.2/README_FILES relay_domains = $mydestination, /etc/postfix/relay-domains relayhost = exchangeserver sample_directory = /usr/share/doc/postfix-2.2.2/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550 This server will relay through an exchange server, but like i said I can send OK and I know that other mail servers are trying to send to this system because it will generate error if there is no MTA running when I attempt to send mail to this system. Any advice on where to start troubleshooting this would be great. Thanks!