1>>> # 2>>> # Initialize. 3>>> # 4>>> #! ../bin/postmap smtpd_check_access 5>>> #msg_verbose 1 6>>> smtpd_delay_reject 0 7OK 8>>> mynetworks 127.0.0.0/8,168.100.3.0/28 9OK 10>>> # 11>>> # MX backup 12>>> # 13>>> mydestination wzv.porcupine.org,localhost.porcupine.org 14OK 15>>> inet_interfaces 168.100.3.7,127.0.0.1 16OK 17>>> recipient_restrictions permit_mx_backup,reject 18OK 19>>> rcpt wietse@wzv.porcupine.org 20OK 21>>> rcpt wietse@backup.porcupine.org 22OK 23>>> rcpt wietse@porcupine.org 24./smtpd_check: <queue id>: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <wietse@porcupine.org>: Recipient address rejected: Access denied; to=<wietse@porcupine.org> proto=SMTP 25554 5.7.1 <wietse@porcupine.org>: Recipient address rejected: Access denied 26>>> permit_mx_backup_networks 168.100.3.5 27OK 28>>> rcpt wietse@backup.porcupine.org 29./smtpd_check: <queue id>: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <wietse@backup.porcupine.org>: Recipient address rejected: Access denied; to=<wietse@backup.porcupine.org> proto=SMTP 30554 5.7.1 <wietse@backup.porcupine.org>: Recipient address rejected: Access denied 31>>> permit_mx_backup_networks 168.100.3.4 32OK 33>>> rcpt wietse@backup.porcupine.org 34OK 35