A minor fix to stop this error from appearing in the log: [21-Mar-2017 14:18:12 UTC] PHP Notice: Undefined index: POSTMARK_PLUGIN_TESTING in /srv/www/opera/htdocs/wp-content/plugins/postmark-wordpress/page-settings.php on line 17
Also adding 'defined( 'ABSPATH' ) || exit;' for hardening security.
A minor fix to stop this error from appearing in the log: [21-Mar-2017 14:18:12 UTC] PHP Notice: Undefined index: POSTMARK_PLUGIN_TESTING in /srv/www/opera/htdocs/wp-content/plugins/postmark-wordpress/page-settings.php on line 17
Also adding 'defined( 'ABSPATH' ) || exit;' for hardening security.