Smtp Connect() Failed PHPmailer - PHP

SMTP connect() failed PHPmailer - PHP

You need to add the Host parameter

$mail->Host = "ssl://smtp.gmail.com"; 

Also, check if you have open_ssl enabled.

<?php
echo !extension_loaded('openssl')?"Not Available":"Available";

PHPMailer SMTP connection failed error

You are getting a DNS error that says it can’t find the host name. So look at your host name property, and see it contains smtp1.gmail.com when it should be smtp.gmail.com.

Fatal error: Uncaught phpmailerException: SMTP connect() failed

Several straightforward errors.

Firstly you're using a very old version of PHPMailer. Upgrade, and ideally switch to using composer.

One simple typo: $mail->SMTPSecure = 'tsl'; should be $mail->SMTPSecure = 'tls';.

Next is a bit more conceptual - you can't get a valid certificate (signed by a public CA) for localhost, so you'll always have trouble trying to do that. There's no benefit in using an encrypted connection to localhost anyway because nothing travels over a network. It's also likely that you don't need authentication when submitting to localhost.

I'd recommend changing all this:

 $mail->isSMTP();                             // Set mailer to use SMTP
 $mail->Host       = 'localhost';             // Set the SMTP server to send through
 $mail->SMTPAuth   = true;                    // Enable SMTP authentication
 $mail->SMTPDebug = 4; 
 $mail->Username   = 'seushms@gmail.com';     // SMTP false username
 $mail->Password   = '';                      // SMTP false password
 $mail->SMTPSecure = 'tsl';         // Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
 $mail->Port       = 587;                // TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above

to just this, because everything else will work with defaults:

$mail->isSMTP();

smtp connect() failed in PHP using phpmailer Library

Hey Do you Allow less secure apps to access your Gmail account ?
if you not allow less secure apps enable and Run again and see the result.

Here is the Example:
https://devanswers.co/allow-less-secure-apps-access-gmail-account/

SMTP connect() failed phpmailer

You should really read what the troubleshooting guide says - that's why the link to it is included in the error output. Set SMTPDebug = 2 so you can see what the server says and it will probably tell you what's wrong.

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