swiftmailer/swiftmailer — pull request #150 by adbre (2012-01-01 16:02:31+00:00)
Title: Prefixed mail() call with error control operator.

In some setups, calling mail() with the fifth parameter with safe_mode Off will generate a warning; but the mail is successfully sent.

Warning: mail(): Policy restriction in effect. The fifth parameter is disabled on this system in [...]Swift-4.0.6/lib/classes/Swift/Transport/SimpleMailInvoker.php on line 50.