<div>
1) The phpmailer code only hands off mail to an MTA.<br />
<br />
2) The MTA does all the work.<br />
<br />
3) First step - verify your MTA is working.<br />
<br />
Normally you'll accomplish this by doing an ssh into your machine, then injecting a message into the MTA using a sendmail wrapper.
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<div>
Sorry, don't know what MTA is.<br><br>The phpmailer works fine where I developed this &amp; on hundreds of other sites I have worked with.<br><br>I suspect this is a "turf war" deal; the hosting people who do I don't know what else for my customer resent my intrusion into their territory &amp; want to make it difficult (or make me fail) so they can get rid of me &amp; get the business I have. They can say to the customer, "see, this guy didn't know how to do this, we do.".
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<div>
<blockquote>
Sorry, don't know what MTA is. 
</blockquote>
<br />
Sure you do ;-)<br />
<br />
MTA = Mail Transfer Agent, or in other words Email Server (Sendmail, Postfix, Exchange etc)<br />
<br />

<blockquote>
Can someone tell me what &quot;configure SMTP auth on your app&quot;
</blockquote>
<br />
Your application needs to authenticate with the SMTP server before attempting to send a message. <br />
<br />
SMTPAUTH needs to be turned on, email port information as well email username/password details need to be provided<br />
<br />
See if this tutorial for PHPMailer helps<br />
<a href="https://blog.teamtreehouse.com/sending-email-with-phpmailer-and-smtp" rel="ugc">https://blog.teamtreehouse.com/sending-email-with-phpmailer-and-smtp</a><br />
<br />
The suggestions made by David Favor were good ones. &nbsp;Testing to make sure the &nbsp;mail server is operational and accessible wouldn't hurt
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<div>
MTA Examples - esmtp, sendmail, exim, postfix, 100s of others...<br />
<br />
An MTA (Mail Transfer Agent) manages enqueuing messages to send, then attempts the SMTP conversation to submit a message to another MTX running on an MX record for a given recipient.<br />
<br />
You can only expect phpmailer to work, where there's a working MTA.<br />
<br />
Said another way, every time your move your phpmailer code, the code will only work if...<br />
<br />
1) The local MTA can actually deliver mail.<br />
<br />
2) You're using a Mail Relay service like MailGun.<br />
<br />
For most people #2 is best, because this means your code will work instantly on any machine.<br />
<br />
In your case, your development environment had a working MTA. In your current environment, looks like there's no working MTA.
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<div>
all you need to do is add a username and password to your php code<br />
$mail-&gt;Username = &quot;authorizeduser@example.co<wbr />m&quot;;<br />
$mail-&gt;Password = &quot;MySuperSecretPassword&quot;;
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<div>
David Johnson,<br><br>I don't follow Username &amp; password. Who, how, when do these get checked to see if they are legit?<br><br>I fail to see the value in setting these unless they are checked.<br><br>Thanks<br><br>
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<div>
One more thing. The tech at the host says this: "I am very familiar with the phpmailer class and in our experience dealing with hosting accounts in the past we know that is the very first point of attack for spammers to manipulate any vulnerable scripts to relay spam emails out. We have had our server banned in the past where now we do use SMTP authentication where emails are actually authenticated using an account. This is the best practice recommended for deliverability."<br><br>Is this true? I find this EXTREMELY unlikely as I have used phpmailer for years, no issues.
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<div>
To <a href="https://www.experts-exchange.com/members/kenfcamp.html" rel="ugc">kenfcamp</a>,<br><br>I checked that link; OK, I get all of it except one thing. How do I determine&nbsp;<pre><code class="code-1 nolinks" id="code-20-43084482-1"><span>$mail-&gt;Host = "smtp.postmarkapp.com";</span>
<span>and the port?</span>
</code></pre>Just ask the host?<br><br>Thanks
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<div>
your email provider has stated that yes you must be authenticated and the host email program will check to see if you are authorized. <br />
SMTP normally uses port 25 and if TLS is involved port 996<br />
<br />
when you've used phpmailer in the past &nbsp;the host allowed open smtp relay your new one doesn't.
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<div>
I don't get any of this.<br><br>Let me try another way.<br><br>It appears I need the mail server url, like <a target="_blank" rel="ugc nofollow">mail.xyz.com</a>. Presumably (per David), the port can be assumed to be 25.<br><br>How do I get the UserID &amp; Password?
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Business Owner / Chief Developer

Richard Korts

<div>
<blockquote>
How do I get the UserID &amp;&nbsp;Password
</blockquote>
<br />

<pre><code class="code-1 nolinks" id="code-20-43085089-1"><span>$mail-&gt;Host = &quot;smtp.postmarkapp.com&quot;;</span>
</code></pre>
<br />
Well assuming you're trying to use smtp.postmarkapp.com, DNS has the MX records pointing to google<br />
<br />
If you are trying to send messages through google, see if this helps in clearing things up for you<br />
<br />
<a href="https://support.google.com/a/answer/176600?hl=en" rel="ugc nofollow">https://support.google.com/a/answer/176600?hl=en</a><br />
<br />
If you're not trying to send through google, then this may not be of much help
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<div>
<div class="content wysiwyg-content">
I'm trying to get an app working on a web server. The app uses the phpMailer class, a class I have been using for years on a huge variety of web servers.<br />
<br />
The server the customer want's to use, there network tech gives me this:<br />
<br />
&quot;I do have a code you can use to send out attachments. Since you said the emails did work before I enabled the SMTP on the server, I went ahead and disabled so you can test this out again. We can leave it disabled but using the default server address can cause issues with the email deliverability unless you can configure SMTP auth on your app. Is that a possibility ?&quot;<br />
<br />
For some reason, the normal phpMailer class does not work there, I am guessing because he has SMTP disabled. I don't know why.<br />
<br />
Attached is a very simple test email I set up to run on this server, it fails with: Mailer Error: SMTP Error: The following recipients failed: richardkorts@gmail.<br />
<br />
Can someone tell me what &quot;configure SMTP auth on your app&quot; means? Using php?<br />
<a href="https://filedb.experts-exchange.com/incoming/2020/05_w20/1455198/email_test.php" target="_blank" class="file-inline" title="email_test.php (651 bytes)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>email_test.php</a>
</div>
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email_test.php

I'm trying to get an app working on a web server. The app uses the phpMailer class, a class I have been using for years on a huge variety of web servers.

The server the customer want's to use, there network tech gives me this:

"I do have a code you can use to send out attachments. Since you said the emails did work before I enabled the SMTP on the server, I went ahead and disabled so you can test this out again. We can leave it disabled but using the default server address can cause issues with the email deliverability unless you can configure SMTP auth on your app. Is that a possibility ?"

For some reason, the normal phpMailer class does not work there, I am guessing because he has SMTP disabled. I don't know why.

Attached is a very simple test email I set up to run on this server, it fails with: Mailer Error: SMTP Error: The following recipients failed: richardkorts@gmail.

Can someone tell me what "configure SMTP auth on your app" means? Using php?

Configure SMTP auth?

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