Allow envelope sender to be specified
(may not be possible with some server configurations)
allow_envelope_sender = On
Default envelope sender to use if none is specified elsewhere
default_envelope_sender = halima123lima@gmail.ma
Force the default envelope sender (if present)
This is useful if setting up a site-wide noreply address
The reply-to field will be set with the reply-to or from address.
force_default_envelope_sender = On