Mail From

(optional) If defined, replaces the mail transaction MAIL FROM:<> in outgoing mailing list mail.

This option is provided for advanced users. Normally, the mail transaction MAIL FROM:<> is the error handler of the Lyris Server, and error mail is defined by Internet standards as going to this address.

If you change this setting, Lyris will no longer receive error mail, and thus will no longer be able to automatically process bounces, error messages, bad deliveries, etc.