Laravel 5.6 SMTP 连接无法与主机 smtp.mailtrap.io 建立

Question

.env file:

MAIL_DRIVER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=myuser
MAIL_PASSWORD=mypassword
MAIL_ENCRYPTION=TLS

I have done the following command to clear cache and config:

php artisan cache:clear
php artisan config:cache
php artisan config:clear

I get the following error

Connection could not be established with host smtp.mailtrap.io [php_network_getaddresses: getaddrinfo failed: No such host is known.

I have also tried restaring local development server.

Answer 1

I do it like this: change the port and the encryption.

MAIL_DRIVER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=465
MAIL_USERNAME=[your username]
MAIL_PASSWORD=[your password]
MAIL_ENCRYPTION=null

And of course change username and password to your credentials.

Answer 2

wrong code typo error

MAIL_HOST=smtp.mailtrap.io
MAIL_ENCRYPTION=NULL

and do this

php artisan cache:clear
php artisan config:clear
sudo service apache2 restart

Answer 3

It seems the server is not able to ping the destination address.

Try to clear cache, config cache, and restart apache2. It will work fine.

php artisan config:clear

php artisan cache:clear

sudo service apache2 restart

Note: clear browser cache & cookies as well.