[php] SMTP server response: 530 5.7.0 Must issue a STARTTLS command first

SMTP server response: 530 5.7.0 Must issue a STARTTLS command first

I get this error message when i use mail() function in php script file...

I m using gmail SMTP server and gmail using STARTTLS which is secure SSL and i already use these commands in my contact.php file

ini_set("SMTP","smtp.gmail.com");
ini_set("sendmail_from","<email-address>@gmail.com>");

so what command i can use to enable STARTTLS or configure in php,ini file??

This question is related to php smtp

The answer is


Out of the box Swift Mailer can't do STARTTLS, however some nice guys have written a patch for it.

I found patching it was a bit of a chore (probably went about it the wrong way), so have zipped it up ready for download here: Swift Mailer with STARTTLS


For Windows, I was able to get it working by enabling TLS for secure communication on the SMTP Virtual server. TLS will not be available on the SMTP virtual server without a certificate. This link will give the steps needed.

https://support.microsoft.com/en-ie/help/4014125/how-to-configure-iis-smtp-for-outgoing-tls-authentication


I had a false response for the following:

fputs($connection, 'STARTTLS'.$newLine);

turns out I use the wrong connection variable, so I just had to change it to:

fputs($smtpConnect, 'STARTTLS'.$newLine);

If using TLS remember to put HELO before and after:

fputs($smtpConnect, 'HELO '.$localhost . $newLine);
$response = fgets($smtpConnect, 515);
if($secure == 'tls')
{
    fputs($smtpConnect, 'STARTTLS'.$newLine);
    $response = fgets($smtpConnect, 515);
stream_socket_enable_crypto($smtpConnect, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);

// Say hello again!
    fputs($smtpConnect, 'HELO '.$localhost . $newLine);
    $response = fgets($smtpConnect, 515);
}

In my case, Swift Mailer couldn't help either. I found a solution here: http://forum.powweb.com/showthread.php?t=73406 - so after EHLO command one needs to send STARTTLS command, enabling cryptography with stream_socket_enable_crypto( $connection, true, STREAM_CRYPTO_METHOD_TLS_CLIENT ); and again EHLO command. Only this allowed me to send emails with my "stubborn" SMTP server.


I am going to share my way and it worked for me after implementing following:

Open Php.ini file and fill the all the values in the respective fields by taking ref from Gmail SMTP Settings

Remove comments from the [mail function] Statements which are instructions to the smtp Server and Match their values.

Also the sendmail SMTP server is a Fake server. Its nothing beside a text terminal (Try writing anything on it. :P). It will use gmail s,tp to send Mails. So configure it correctly by matching Gmail SMTP settings:

smtp.gmail.com
Port: 587

Problem Solved,

I edited the file /etc/postfix/master.cf

and commented

-o smtpd_relay_restrictions=permit_sasl_authenticated,reject

and changed the line from

-o smtpd_tls_security_level=encrypt 

to

-o smtpd_tls_security_level=may

And worked on fine


I know that PHPMailer library can handle that kind of SMTP transactions.

Also, a fake sendmail with sendmail-SSL library should do the job.


Blockquote

I then modified the php.ini file to use it (commented out the other lines):

[mail function]
; For Win32 only.
; SMTP = smtp.gmail.com
; smtp_port = 25

; For Win32 only.
; sendmail_from = <e-mail username>@gmail.com

; For Unix only. You may supply arguments as well (default: "sendmail -t -i").
sendmail_path = "C:\xampp\sendmail\sendmail.exe -t"

Ignore the "For Unix only" comment, as this version of sendmail works for Windows.

You then have to configure the "sendmail.ini" file in the directory where sendmail was installed:

[sendmail]

smtp_server=smtp.gmail.com
smtp_port=25
error_logfile=error.log
debug_logfile=debug.log
auth_username=<username>
auth_password=<password>
force_sender=<e-mail username>@gmail.com

http://byitcurious.blogspot.com.br/2009/04/solving-must-issue-starttls-command.html

> Blockquote