Laravel certificate verification errors when sending TLS email

Question

Windows 10, Apache httpd 2.4, PHP 7.1.4, Laravel 5.5
Gmail's less secure is Allowed.

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My.env file:

MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
MAIL_USERNAME=account@gmail.com
MAIL_PASSWORD=password
MAIL_ENCRYPTION=ssl

Error Message:

Connection could not be established with host smtp.gmail.com

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MAIL_PORT=587
MAIL_ENCRYPTION=tls

Error Message:

stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed

How can I resolve the "certificate verify failed" error?

Answer 1

I found the solution. No need to change guzzlehttp/guzzle/src/Client.php which is suggested in another question.

Solution:

1. Download cacert.pem file from https://curl.haxx.se/docs/caextract.html
   Put the cacert.pem somewhere you like.

2. Edit php.ini

two lines:

curl.cainfo=D:/Servers/php/sslfiles/cacert.pem  
openssl.cafile=D:/Servers/php/sslfiles/cacert.pem 

3. Restart apache httpd.

Answer 2

When you receive ssl certificate verification error, You can set these two variables in.env file:

MAIL_PORT=587
MAIL_ENCRYPTION=tcp