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881 bytes added ,  10:55, 28 August 2018
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=== My wiki won't send email ===
First, did you check if mail is working from PHP?
 
<source lang="php">
<?php
$mailto = 'greg@eQuality-Tech.com';
$subject = 'test mail';
$message = 'sample message';
$from = 'wiki@example.org';
$header = "From:$from";
 
if ( mail ( $mailto, $subject, $message, $header ) ) {
echo "Email sent\n";
echo "Try 'sudo tail /var/log/mail.log' to look for other possible errors.\n";
}
</source>
 
If your application already has email capability, but it won't send, then turn on the mail_log feature in php.ini and check that sendmail/postfix is installed on your system. You might start with <code>sudo apt-get install mailutils</code>. If on AWS or datacenter, you can set up as an internet site and be done. If you are behind a consumer broadband IP, you will probably need to setup a 'smarthosted' site and use (your own) IMAP credentials to send email through another provider.
=== How do I use the 'mail' command? ===
You're on a linux server and you see "You've got mail". So, you type 'mail' and immediately have no idea how to process the messages. See this excellent tutorial/write-up of the basic '''mail''' command: http://www.johnkerl.org/doc/mail-how-to.html The <code>mail</code> command works like the editor '''<code>ed</code>''' which is to say not very well known today. (See <code>man mail</code> -- The manual page was written in 1993.) The man page refers to [https://docs.freebsd.org/44doc/usd/07.mail/paper.pdf The Mail Reference Manual] originally written by Kurt Shoens
 
=== What is my mail server doing? ===
<code>mailq</code> tells you about what's in the queue (What it's going to send).
 
Grepping the mail log can tell you where your server has sent mail.
<source lang="bash">
grep --perl-regex --only-matching ' to=[^ ,]*' /var/log/maillog | awk -F= '{print $2}' | sort | uniq -c
</source>
 
 
<pre>
37 admin@equality-tech.com\t
305 meza-ansible
305 <meza-ansible@my.qualitybox.us>
35 root
</pre>
 
 
 
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