Start Updating ssl certificate server 2016

Updating ssl certificate server 2016

It's particularly important to use composer if you're using XOAUTH2 authentication since it requires many dependent classes that are satisfied by composer.

About 90% of questions on Stack Overflow make this mistake, and is especially likely since the release of PHPMailer 6.0.

Composer saves a huge amount of work - handling package dependencies, updates and downloading, and generates a nice autoloader so you don't have to This file will only exist if you have used composer to install PHPMailer; it is not part of the PHPMailer package itself.

This is because all those domains deploy SPF and DKIM anti-forgery measures, and faking your from address is forgery.

If perhaps you don't have a name in DNS, you can use an IP address directly as the hostname.

Popular US hosting provider Go Daddy imposes very strict (to the point of becoming almost useless) constraints on sending an email.

They block outbound SMTP to ports 25, 465 and 587 to all servers except their own.

If you see an error like If you're running PHP-FPM via fastcgi, you may need to apply this to the fpm daemon rather than httpd.