How to add x-original-to

Hello everyone,

we would love to add the header “x-original-to” to the mails we are receiving with mailcow.

Especially useful for aliases.

Maildrop should add this header by adding O to the options:

maildrop unix - n n - - pipe flags=ODRhu
user=vmail argv=/usr/bin/maildrop -d ${recipient}

but the header is not added.

Are there any ideas how to solve this problem?

i changed the master.cf to the posted
and added to extra.cf

enable_original_recipient = yes
maildrop_destination_recipient_limit = 1

Any kind of help is appreciated..

thanks in advance

Greetings

Marcel