By default, Unoverica Message Transport will send delivery failure notifications to the message sender as defined in the envelope. However, some mail systems append an "Errors-To:" address to the header, which is supposed to be used for delivery-failure notifications as well.

Disabling this option tells Unoverica Message Transport to ignore any "Errors-To:" headers, and to only notify the message sender as found in the envelope.

YES/NO

YES

By default, errors are also sent to the postmaster account on the local system. This option does not affect this behavior.