postconf -n output
----------------------
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
default_transport = smtp
inet_interfaces = all
inet_protocols = all
mailbox_size_limit = 0
mydestination = ussu.sussex.ac.uk, sussex.ac.uk, localhost
myhostname = it-su-helpdesk.ussu.sussex.ac.uk
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relay_transport = smtp
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = no

mail.log output
----------------------------------


May 31 19:49:37 it-su-helpdesk postfix/qmgr[2467]: 4C9DE615E1: from=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, size=1401, nrcpt=1 (queue active)
May 31 19:49:37 it-su-helpdesk postfix/local[2473]: 4C9DE615E1: to=<unioncomputers@sussex.ac.uk>, orig_to=<unioncomputers@ussu.sussex.ac.uk>, relay=local, delay=0.09, delays=0.04/0.02/0/0.02, dsn=5.1.1, status=bounced (unknown user: "unioncomputers")
May 31 19:49:37 it-su-helpdesk postfix/cleanup[2471]: 5DFDF615E2: message-id=<20110531184937.5DFDF615E2@it-su-helpdesk.ussu.sussex.ac.uk>
May 31 19:49:37 it-su-helpdesk postfix/qmgr[2467]: 5DFDF615E2: from=<>, size=3567, nrcpt=1 (queue active)
May 31 19:49:37 it-su-helpdesk postfix/bounce[2474]: 4C9DE615E1: sender non-delivery notification: 5DFDF615E2
May 31 19:49:37 it-su-helpdesk postfix/qmgr[2467]: 4C9DE615E1: removed
May 31 19:49:37 it-su-helpdesk postfix/smtp[2476]: 5DFDF615E2: to=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, relay=none, delay=0.08, delays=0/0.07/0.01/0, dsn=5.4.6, status=bounced (mail for it-su-helpdesk.ussu.sussex.ac.uk loops back to myself)
May 31 19:49:37 it-su-helpdesk postfix/qmgr[2467]: 5DFDF615E2: removed
May 31 19:53:56 it-su-helpdesk postfix/master[2463]: terminating on signal 15
May 31 19:53:57 it-su-helpdesk postfix/master[2595]: daemon started -- version 2.8.2, configuration /etc/postfix
May 31 19:54:13 it-su-helpdesk postfix/pickup[2598]: 8ABE6615E1: uid=33 from=<www-data>
May 31 19:54:13 it-su-helpdesk postfix/cleanup[2603]: 8ABE6615E1: message-id=<rt-3.8.10-1029-1306868053-1714.15-6-0@it-su-helpdesk.ussu.susx.ac.uk>
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: 8ABE6615E1: from=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, size=1588, nrcpt=1 (queue active)
May 31 19:54:13 it-su-helpdesk postfix/cleanup[2603]: 93416615D7: message-id=<rt-3.8.10-1029-1306868053-1714.15-6-0@it-su-helpdesk.ussu.susx.ac.uk>
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: 93416615D7: from=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, size=1748, nrcpt=1 (queue active)
May 31 19:54:13 it-su-helpdesk postfix/local[2605]: 8ABE6615E1: to=<unioncomputers@ussu.sussex.ac.uk>, relay=local, delay=0.06, delays=0.04/0.02/0/0.01, dsn=2.0.0, status=sent (forwarded as 93416615D7)
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: 8ABE6615E1: removed
May 31 19:54:13 it-su-helpdesk postfix/smtp[2606]: 93416615D7: to=<unioncomputers@it-su-helpdesk.ussu.sussex.ac.uk>, orig_to=<unioncomputers@ussu.sussex.ac.uk>, relay=none, delay=0.06, delays=0/0.05/0/0, dsn=5.4.6, status=bounced (mail for it-su-helpdesk.ussu.sussex.ac.uk loops back to myself)
May 31 19:54:13 it-su-helpdesk postfix/cleanup[2603]: A8624615E2: message-id=<20110531185413.A8624615E2@it-su-helpdesk.ussu.sussex.ac.uk>
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: A8624615E2: from=<>, size=4028, nrcpt=1 (queue active)
May 31 19:54:13 it-su-helpdesk postfix/bounce[2608]: 93416615D7: sender non-delivery notification: A8624615E2
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: 93416615D7: removed
May 31 19:54:13 it-su-helpdesk postfix/smtp[2606]: A8624615E2: to=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, relay=none, delay=0.01, delays=0/0/0.01/0, dsn=5.4.6, status=bounced (mail for it-su-helpdesk.ussu.sussex.ac.uk loops back to myself)
May 31 19:54:13 it-su-helpdesk postfix/qmgr[2599]: A8624615E2: removed
May 31 19:55:15 it-su-helpdesk postfix/master[2595]: terminating on signal 15
May 31 19:55:16 it-su-helpdesk postfix/master[2730]: daemon started -- version 2.8.2, configuration /etc/postfix
May 31 19:55:27 it-su-helpdesk postfix/pickup[2733]: 70ECD615E1: uid=33 from=<www-data>
May 31 19:55:27 it-su-helpdesk postfix/cleanup[2738]: 70ECD615E1: message-id=<rt-3.8.10-1001-1306868127-56.15-6-0@it-su-helpdesk.ussu.susx.ac.uk>
May 31 19:55:27 it-su-helpdesk postfix/qmgr[2734]: 70ECD615E1: from=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, size=1802, nrcpt=1 (queue active)
May 31 19:55:27 it-su-helpdesk postfix/local[2740]: 70ECD615E1: to=<unioncomputers@ussu.sussex.ac.uk>, relay=local, delay=0.09, delays=0.04/0.02/0/0.03, dsn=5.1.1, status=bounced (unknown user: "unioncomputers")
May 31 19:55:27 it-su-helpdesk postfix/cleanup[2738]: 82BD5615E2: message-id=<20110531185527.82BD5615E2@it-su-helpdesk.ussu.sussex.ac.uk>
May 31 19:55:27 it-su-helpdesk postfix/qmgr[2734]: 82BD5615E2: from=<>, size=3860, nrcpt=1 (queue active)
May 31 19:55:27 it-su-helpdesk postfix/bounce[2741]: 70ECD615E1: sender non-delivery notification: 82BD5615E2
May 31 19:55:27 it-su-helpdesk postfix/qmgr[2734]: 70ECD615E1: removed
May 31 19:55:27 it-su-helpdesk postfix/smtp[2743]: 82BD5615E2: to=<www-data@it-su-helpdesk.ussu.sussex.ac.uk>, relay=none, delay=0.08, delays=0/0.07/0.01/0, dsn=5.4.6, status=bounced (mail for it-su-helpdesk.ussu.sussex.ac.uk loops back to myself)
May 31 19:55:27 it-su-helpdesk postfix/qmgr[2734]: 82BD5615E2: removed
May 31 19:55:30 it-su-helpdesk postfix/master[2730]: terminating on signal 15
May 31 19:55:30 it-su-helpdesk postfix/master[2858]: daemon started -- version 2.8.2, configuration /etc/postfix
May 31 19:58:14 it-su-helpdesk postfix/master[2858]: terminating on signal 15
May 31 19:58:14 it-su-helpdesk postfix/master[2980]: daemon started -- version 2.8.2, configuration /etc/postfix
May 31 19:58:35 it-su-helpdesk postfix/pickup[2983]: 1A32A615E1: uid=0 from=<root>
May 31 19:58:35 it-su-helpdesk postfix/cleanup[2988]: 1A32A615E1: message-id=<20110531185835.1A32A615E1@it-su-helpdesk.ussu.sussex.ac.uk>
May 31 19:58:35 it-su-helpdesk postfix/qmgr[2984]: 1A32A615E1: from=<root@it-su-helpdesk.ussu.sussex.ac.uk>, size=381, nrcpt=1 (queue active)
May 31 19:58:35 it-su-helpdesk postfix/local[2990]: 1A32A615E1: to=<h.d.yousif@sussex.ac.uk>, relay=local, delay=0.04, delays=0.02/0.01/0/0.01, dsn=5.1.1, status=bounced (unknown user: "h.d.yousif")
May 31 19:58:35 it-su-helpdesk postfix/cleanup[2988]: 21D54615E2: message-id=<20110531185835.21D54615E2@it-su-helpdesk.ussu.sussex.ac.uk>
May 31 19:58:35 it-su-helpdesk postfix/qmgr[2984]: 21D54615E2: from=<>, size=2335, nrcpt=1 (queue active)
May 31 19:58:35 it-su-helpdesk postfix/bounce[2991]: 1A32A615E1: sender non-delivery notification: 21D54615E2
May 31 19:58:35 it-su-helpdesk postfix/qmgr[2984]: 1A32A615E1: removed
May 31 19:58:35 it-su-helpdesk postfix/smtp[2993]: 21D54615E2: to=<root@it-su-helpdesk.ussu.sussex.ac.uk>, relay=none, delay=0.04, delays=0.01/0.03/0/0, dsn=5.4.6, status=bounced (mail for it-su-helpdesk.ussu.sussex.ac.uk loops back to myself)
May 31 19:58:35 it-su-helpdesk postfix/qmgr[2984]: 21D54615E2: removed