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- # See /usr/share/postfix/main.cf.dist for a commented, more complete version
- # Debian specific: Specifying a file name will cause the first
- # line of that file to be used as the name. The Debian default
- # is /etc/mailname.
- #myorigin = /etc/mailname
- smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
- biff = no
- # appending .domain is the MUA's job.
- append_dot_mydomain = no
- # Uncomment the next line to generate "delayed mail" warnings
- #delay_warning_time = 4h
- readme_directory = no
- # See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
- # fresh installs.
- compatibility_level = 2
- # TLS parameters
- smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
- smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
- smtpd_use_tls=yes
- smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
- smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
- # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
- # information on enabling SSL in the smtp client.
- smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
- myhostname = myservername.domain.edu
- alias_maps = hash:/etc/aliases
- alias_database = hash:/etc/aliases
- myorigin = /etc/mailname
- mydestination = myservername.domain.edu, localhost.domain.edu, localhost
- relayhost =
- mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- mailbox_command = procmail -a "$EXTENSION"
- mailbox_size_limit = 0
- recipient_delimiter = +
- inet_interfaces = all
- inet_protocols = ipv4
- message_size_limit = 10240000
- permit_mynetworks = yes
- mynetworks = 172.16.4.0/24, 172.16.5.0/24, 172.16.246.0/24, 192.168.90.0/24, 192.168.1.0/24, ###.###.103.0/24, ###.###.104.0/24, ###.###.106.0/24, ###.###.250.0/24, 10.19.64.0/27, 10.19.66.0/27, 10.19.68.0/27
- user@myservername:~$ tail -30 /var/log/mail.log
- May 29 14:23:49 myservername postfix/smtp[3351]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:24:19 myservername postfix/smtp[3349]: connect to subdomain.domain.edu[###.###.104.118]:25: Connection timed out
- May 29 14:24:19 myservername postfix/smtp[3350]: connect to mxa-00246402.gslb.pphosted.com[148.163.147.197]:25: Connection timed out
- May 29 14:24:19 myservername postfix/smtp[3351]: connect to subdomain.domain.edu[###.###.104.154]:25: Connection timed out
- May 29 14:24:19 myservername postfix/smtp[3351]: connect to subdomain.domain.edu[###.###.104.57]:25: Connection refused
- May 29 14:24:19 myservername postfix/smtp[3351]: connect to subdomain.domain.edu[###.###.103.6]:25: Connection refused
- May 29 14:24:19 myservername postfix/smtp[3351]: connect to subdomain.domain.edu[###.###.250.72]:25: Connection refused
- May 29 14:24:49 myservername postfix/smtp[3350]: connect to mxb-00246402.gslb.pphosted.com[148.163.143.147]:25: Connection timed out
- May 29 14:24:49 myservername postfix/smtp[3349]: connect to subdomain.domain.edu[###.###.103.43]:25: Connection timed out
- May 29 14:24:49 myservername postfix/bounce[3357]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:24:49 myservername postfix/smtp[3351]: connect to subdomain.domain.edu[###.###.103.43]:25: Connection timed out
- May 29 14:24:49 myservername postfix/bounce[3358]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:24:49 myservername postfix/smtp[3350]: 35A96120180: to=<apc@domain.edu>, relay=none, delay=631, delays=571/0.03/60/0, dsn=4.4.1, status=deferred (connect to mxb-00246402.gslb.pphosted.com[148.163.143.147]:25: Connection timed out)
- May 29 14:24:49 myservername postfix/smtp[3351]: 4047E12083C: to=<username@subdomain.domain.edu>, relay=none, delay=431116, delays=431056/0.04/60/0, dsn=4.4.1, status=deferred (connect to subdomain.domain.edu[###.###.103.43]:25: Connection timed out)
- May 29 14:25:19 myservername postfix/smtp[3349]: connect to subdomain.domain.edu[###.###.104.154]:25: Connection timed out
- May 29 14:25:19 myservername postfix/smtp[3349]: 68665120733: to=<username@subdomain.domain.edu>, relay=none, delay=434852, delays=434761/0.06/90/0, dsn=4.4.1, status=deferred (connect to subdomain.domain.edu[###.###.104.154]:25: Connection timed out)
- May 29 14:25:19 myservername postfix/qmgr[1688]: 68665120733: from=<apc@domain.edu>, status=expired, returned to sender
- May 29 14:25:19 myservername postfix/cleanup[3365]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:25:19 myservername postfix/cleanup[3365]: CE1B8124492: message-id=<20180529192519.CE1B8124492@myservername.domain.edu>
- May 29 14:25:19 myservername postfix/bounce[3357]: 68665120733: sender non-delivery notification: CE1B8124492
- May 29 14:25:19 myservername postfix/qmgr[1688]: CE1B8124492: from=<>, size=2844, nrcpt=1 (queue active)
- May 29 14:25:19 myservername postfix/qmgr[1688]: 68665120733: removed
- May 29 14:25:49 myservername postfix/smtp[3350]: connect to mxa-00246402.gslb.pphosted.com[148.163.147.197]:25: Connection timed out
- May 29 14:26:19 myservername postfix/smtp[3350]: connect to mxb-00246402.gslb.pphosted.com[148.163.147.197]:25: Connection timed out
- May 29 14:26:19 myservername postfix/smtp[3350]: CE1B8124492: to=<apc@domain.edu>, relay=none, delay=60, delays=0.03/0/60/0, dsn=4.4.1, status=deferred (connect to mxb-00246402.gslb.pphosted.com[148.163.147.197]:25: Connection timed out)
- May 29 14:28:49 myservername postfix/qmgr[1688]: 8F7B51200D6: from=<>, size=2838, nrcpt=1 (queue active)
- May 29 14:28:49 myservername postfix/trivial-rewrite[3378]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:28:49 myservername postfix/qmgr[1688]: 92033120E39: from=<>, size=2836, nrcpt=1 (queue active)
- May 29 14:28:49 myservername postfix/smtp[3379]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
- May 29 14:28:49 myservername postfix/smtp[3380]: warning: /etc/postfix/main.cf, line 49: overriding earlier entry: mynetworks=127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
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