Alright, so I only got Postfix for a PHP contact form that will send email to a single . I only want it to send out mail to a single external address (foo@example.com). I have domain sub1.sub2.domain.com. I installed Postfix out of the Ubuntu repo, with minimal config changes. I cannot get Postfix to send mail externally (though it succeeds for internal accounts, which is unnecessary).
The email simply defers if I generate an email using PHP mail(). If I try to form my own in telnet, right after rcpt to: [email]foo@example.com[/email], I get a
postfix/smtpd[31606]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 550 5.1.1 <foo@example.com>: Recipient address rejected: example.com; from=<root@localhost> to=<foo@example.com> proto=ESMTP helo=<localhost>
when commenting out default_transport = error and relay_transport = error lines, I get the following:
Jun 26 14:33:00 sub1 postfix/smtp[12191]: 2DA06F88206A: to=<bar@gmail.com>, relay=none, delay=514, delays=409/0.01/105/0, dsn=4.4.1, status=deferred (connect to aspmx3.googlemail.com[74.125.127.27]:25: Connection timed out)
Jun 26 14:36:36 sub1 postfix/smtp[12225]: connect to mta7.am0.yahoodns.net[98.139.175.224]:25: Connection timed out
Jun 26 14:38:00 sub1 postfix/smtp[12225]: 22952F88208E: to=<foo@yahoo.com>, relay=none, delay=655, delays=550/0.01/105/0, dsn=4.4.1, status=deferred (connect to mta5.am0.yahoodns.net[67.195.168.230]:25: Connection timed out)
My main.cf
# 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 $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${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.
myhostname = sub1.sub2.domain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = sub1.sub2.domain.com, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
default_transport = error
relay_transport = error
Also, a dig sub1.sub2.domain.com MX returns:
; <<>> DiG 9.7.0-P1 <<>> sub1.sub2.domain.com MX
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4853
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;sub1.sub2.domain.com. IN MX
;; AUTHORITY SECTION:
sub2.domain.com. 600 IN SOA sub2.domain.com. sub5.domain.com. 2012062915 7200 600 1209600 600
;; Query time: 0 msec
;; SERVER: x.x.x.x#53(x.x.x.x)
;; WHEN: Fri Jun 29 16:35:00 2012
;; MSG SIZE rcvd: 84
lsof -i returns empty
netstat -t -a | grep LISTEN returns
tcp 0 0 localhost:mysql *:* LISTEN
tcp 0 0 *:ftp *:* LISTEN
tcp 0 0 *:ssh *:* LISTEN
tcp 0 0 localhost:ipp *:* LISTEN
tcp 0 0 *:smtp *:* LISTEN
tcp6 0 0 [::]:netbios-ssn [::]:* LISTEN
tcp6 0 0 [::]:www [::]:* LISTEN
tcp6 0 0 [::]:ssh [::]:* LISTEN
tcp6 0 0 localhost:ipp [::]:* LISTEN
tcp6 0 0 [::]:microsoft-ds [::]:* LISTEN
