Bug: Can't Send Email Using SMTP

[yllumi]

PHP Version

8.3

CodeIgniter4 Version

4.6.0

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

fpm-fcgi

Database

No response

What happened?

I've tried to setup email sender using CodeIgniter Email class. I use SMTP configuration with SMTPCrypto=tls, SMTPPort=587 and other auth configuration. Then it shows this debug message:

hello: 
The following SMTP error was encountered:
starttls: 
The following SMTP error was encountered:
Unable to send email using SMTP. Your server might not be configured to send mail using this method.
Date: Wed, 12 Feb 2025 17:35:25 +0700
To: [email protected]
Subject: =?UTF-8?Q?SMTP=20Email=20Testing?=
From: "Masagi" <[email protected]>
Return-Path: <[email protected]>
Reply-To: <[email protected]>
User-Agent: Tarbiyya
X-Sender: [email protected]
X-Mailer: Tarbiyya
X-Priority: 3 (Normal)
Message-ID: <[email protected]>
Mime-Version: 1.0


Content-Type: multipart/alternative; boundary="B_ALT_67ac796d34a404.14803652"

This is a multi-part message in MIME format.
Your email application may not support this format.

--B_ALT_67ac796d34a404.14803652
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This is sample body of email testing using SMTP.


--B_ALT_67ac796d34a404.14803652
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

This is sample body of email testing using SMTP.

--B_ALT_67ac796d34a404.14803652--

For comparison, I try to use PHPMailer package with same configuration I've set in Config\Email class and it sent the message successfully. I use SMTP account from Hostinger.

Steps to Reproduce

This is my sample code:

// CodeIgniter Email
$email = service("email");
$email->setTo("[email protected]");
$email->setSubject("SMTP Email Testing");
$email->setMessage("This is sample body of email testing using SMTP.");
$email->send(false);
echo $email->printDebugger();

// PHPMailer
$mail = new PHPMailer(true);
$EmailConfig = new \Config\Email;
try {
    $mail->SMTPDebug = SMTP::DEBUG_SERVER;
    $mail->isSMTP();
    $mail->Host       = $EmailConfig->SMTPHost;
    $mail->SMTPAuth   = true;
    $mail->Username   = $EmailConfig->SMTPUser;
    $mail->Password   = $EmailConfig->SMTPPass;
    $mail->SMTPSecure = $EmailConfig->SMTPCrypto; // 'tls'
    $mail->Port       = $EmailConfig->SMTPPort; // 587

    $mail->setFrom($EmailConfig->fromEmail, $EmailConfig->fromName);
    $mail->addAddress('[email protected]');
    $mail->isHTML(true);

    $mail->Subject = 'SMTP Email Testing';
    $mail->Body    = 'This is sample body of email testing using SMTP.';

    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}

Expected Output

I don't know if I missed something in my configuration or if there is an error in the Email class.

Anything else?

No response

[michalsn]

I can't reproduce the problem using an email from Hostinger.

These are the only things changed in the email config.

email.fromEmail = 'hello@<private>'
email.fromName = 'This is me'
email.protocol = 'smtp'
email.SMTPHost = 'smtp.hostinger.com'
email.SMTPUser = 'hello@<private>'
email.SMTPPass = '<private>'
email.SMTPCrypto = 'tls'
email.SMTPPort = '587'
email.mailType = 'html'

The log:

220 ESMTP smtp.hostinger.com

hello: 250-smtp.hostinger.com
250-PIPELINING
250-SIZE 48811212
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 CHUNKING

starttls: 220 2.0.0 Ready to start TLS

hello: 250-smtp.hostinger.com
250-PIPELINING
250-SIZE 48811212
250-ETRN
250-AUTH PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 CHUNKING

from: 250 2.1.0 Ok

to: 250 2.1.5 Ok

data: 354 End data with .

250 2.0.0 Ok: queued as 4YtnkF3L5YzF8gN4

quit: 221 2.0.0 Bye

Your message has been successfully sent using the following protocol: smtp

<here goes the message>

[michalsn]

@yllumi Can you add something to help us reproduce the error? Without that, I'm afraid I'll have to close this issue.