PHP mail() not sending mail

Question

I currently am trying to add a contact form to my site but postfix does not seem to send the mail. Here is my mail test script:

<?php

ini_set( 'display_errors', 1 );
error_reporting( E_ALL );
$from = "test@induce.tech";
$to = "mbergwall2222@gmail.com";
$subject = "PHP Mail Test script";
$message = "This is a test to check the PHP Mail functionality";
$headers = "From:" . $from;
mail($to,$subject,$message, $headers);
echo "Test email sent";
?>

The script echos this out: Test email sent But no mail gets sent. I check my postfix mail log and this is what I see:

Jun 27 17:09:01 mbergwall2222 postfix/smtp[21196]: A0FDB41107: to=<root@mbergwall2222>, relay=none, delay=0.04, delays=0/0/0.03/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=mbergwall2222 type=A: Host not found)
Jun 27 17:09:01 mbergwall2222 postfix/qmgr[1915]: A0FDB41107: removed

Seems like there may be an issue with my hostname. If I do hostname in SSH, it returns induce.tech (this is correct, this is the domain name my server is on. Here is my postfix 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.

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated 
defer_unauth_destination
myhostname = induce.tech
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = loopback-only
inet_protocols = ipv4
local_transport = error:local delivery is disabled
smtp_helo_name = $myhostname.example.com

Here are my two host files:

/etc/hosts

# Your system has configured 'manage_etc_hosts' as True.
# As a result, if you wish for changes to this file to persist
# then you will need to either
# a.) make changes to the master file in /etc/cloud/templates/hosts.tmpl
# b.) change or remove the value of 'manage_etc_hosts' in
#     /etc/cloud/cloud.cfg or cloud-config from user-data
#
127.0.1.1 induce.tech
127.0.0.1 localhost

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

/etc/hostname

induce.tech

NOTE: I am using server pilot for this Ubuntu server's control panel!

Host: Digital Ocean

Let me know if anyone can help! Thanks!

EDIT: Here is my phpinfo(): Pastebin

EDIT2: Here is the correct log file:

[27-Jun-2017 17:03:50 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:9]: To: mbergwall2222@gmail.com -- Headers: From: contact@induce.tech  Reply-to: mattthefat2222@gmail.com -- Subject: test
[27-Jun-2017 17:05:48 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:9]: To: mbergwall2222@gmail.com -- Headers: From: contact@induce.tech  Reply-to: mattthefat2222@gmail.com -- Subject: Test
[27-Jun-2017 17:08:17 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script
[27-Jun-2017 17:12:12 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script
[27-Jun-2017 17:16:13 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script
[27-Jun-2017 17:16:16 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script
[27-Jun-2017 17:22:23 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script
[27-Jun-2017 17:29:35 UTC] mail() on [/srv/users/induce/apps/induce/public/portfolio/php/contact.php:10]: To: mbergwall2222@gmail.com -- Headers: From:test@induce.tech -- Subject: PHP Mail Test script

EDIT3: Here is the output of postconf -n

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
inet_interfaces = all
inet_protocols = all
mailbox_size_limit = 0
mydestination = $myhostname, induce.tech, mbergwall2222, localhost.localdomain, localhost
mydomain = induce.tech
myhostname = induce.tech
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes

Are you sure that message is from that script? It looks like it's trying to send a local email to `root@mbergwall2222`. — aynber, Jun 27 '17 at 17:49
if you're hosted on digital ocean, you should already be setup to send php emails. give their support team a call. — unixmiah, Jun 27 '17 at 17:59
How is your php configured? Check http://www.php.net/manual/en/mail.configuration.php — data cosmos, Jun 27 '17 at 18:03
so take a look in /srv/users/induce/log/induce/induce_php7.1.mail.log and check if your sendmail path is correct. I would second the comment from @aynber — data cosmos, Jun 27 '17 at 18:31
@datacosmos Looks right..... editted the question with the new log — Matthew Bergwall, Jun 27 '17 at 18:40
Looking at `mydestination = $myhostname, induce.tech, mbergwall2222, localhost.localdomain, localhost` wondering where mbergwall2222 is coming from, thinking it is set in `/etc/mailname`. I second contacting the digital ocean support team, as I am unfamiliar with the heading in your `/etc/hosts` file and how it would affect your configuration. — Will B., Jun 28 '17 at 17:22

score 1 · Answer 1 · answered Jun 27 '17 at 19:22

As you do not use a FQDN in your /etc/hostname, it conflicts with default configuration for postfix and how it derives the mydomain parameter.

The myhostname parameter specifies the fully-qualified domain name of the machine running the Postfix system. $myhostname appears as the default value in many other Postfix configuration parameters.

The mydomain parameter specifies the parent domain of $myhostname. By default, it is derived from $myhostname by stripping off the first part (unless the result would be a top-level domain).

Conversely, if you specify mydomain in main.cf, then Postfix will use its value to generate a fully-qualified default value for the myhostname parameter.

Resources:

So for example the top-level domain (TLD) of www.example.com would be com, where the TLD of induce.tech would be tech.

So to resolve the issue add a FQDN to your /etc/hosts file, such as server.induce.tech, then update the myhostname parameter in your /etc/postfix/main.cf attribute to match.

myhostname = server.induce.tech

Otherwise you will need to explicitly set the mydomain parameter in your `/etc/postfix/main.cf

mydomain = induce.tech

You can view the overridden settings by running postconf -n in your console.

Do I need to run the script on server.induce.tech or no? And also does it now send emails as example@server.induce.tech — Matthew Bergwall, Jun 27 '17 at 19:25
I added mydomain = induce.tech into the main.cf, but still nothing gets sent. — Matthew Bergwall, Jun 27 '17 at 19:28
Yes it will send emails as `@server.induce.tech` unless you specify `myorigin` parameter to avoid conflicting with an alternate email server. Be sure to restart postfix after making changes. — Will B., Jun 27 '17 at 19:29
I set mydomain = induce.tech, myhostname = induce.tech, restarted postfix, still no emails are being sent. — Matthew Bergwall, Jun 27 '17 at 19:33
run `postconf -n` and update your question with the result please. — Will B., Jun 27 '17 at 19:38

PHP mail() not sending mail

1 Answers1