I have read through some other post and found others but not the fix i am looking for. My problem is i can receive emails and send emails only to users/domains hosted on my server when i try to send outside of my box i get 'Louis Romano' on 3/9/2006 3:55 AM 554 <[email protected]>: Recipient address rejected: Relay access denied '[email protected]' on 3/9/2006 3:55 AM 554 <[email protected]>: Recipient address rejected: Relay access denied '[email protected]' on 3/9/2006 3:55 AM 554 <[email protected]>: Recipient address rejected: Relay access denied my postfix main.cf alias_maps = hash:/etc/aliases allow_untrusted_routing = yes biff = no broken_sasl_auth_clients = yes canonical_maps = hash:/etc/postfix/canonical command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/lib/postfix debug_peer_level = 2 defer_transports = disable_dns_lookups = no home_mailbox = Maildir/ html_directory = /usr/share/doc/packages/postfix/html inet_protocols = all mail_spool_directory = /var/mail mailbox_command = mailbox_size_limit = 0 mailbox_transport = mailq_path = /usr/bin/mailq manpage_directory = /usr/share/man masquerade_classes = envelope_sender, header_sender, header_recipient masquerade_domains = masquerade_exceptions = root message_size_limit = 10240000 mydestination = /etc/postfix/local-host-names myorigin = $mydomain newaliases_path = /usr/bin/newaliases readme_directory = /usr/share/doc/packages/postfix/README_FILES relay_domains = /etc/postfix/local-host-names relocated_maps = hash:/etc/postfix/relocated sample_directory = /usr/share/doc/packages/postfix/samples sender_canonical_maps = hash:/etc/postfix/sender_canonical sendmail_path = /usr/sbin/sendmail setgid_group = maildrop smtp_sasl_auth_enable = no smtp_tls_note_starttls_offer = yes smtp_use_tls = yes smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,check_relay_domains smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous smtpd_sender_restrictions = hash:/etc/postfix/access smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes strict_rfc821_envelopes = no tls_random_source = dev:/dev/urandom transport_maps = hash:/etc/postfix/transport unknown_local_recipient_reject_code = 550
You must enable something like "Server requires authentication." in your email client. For example, in Outlook you do it like this: http://mail.cs.uiuc.edu/relay/outlook-config.html