Почему ответ на письмо приходит от: Postmaster

Я создал скрипт sieve, который фильтрует определенные слова в теме, отбрасывает тело и отправляет уведомление получателю и отправителю.

Все работает хорошо, но единственное, что я не могу понять, это как изменить ответное письмо, чтобы оно не было от POSTMASTER.

Я изменил 15-lda.conf в /etc/dovecot/conf.d

#Address to use when sending rejection mails.
#Default is no-reply@%d. %d expands to recipient domain.
postmaster_address = no-reply@my-domain.com. 

но все равно получаю From: Postmaster. Просто предупреждаю: dovecot, postfix перезапущены.

Не могли бы вы указать мне, что мне нужно сделать, чтобы изменить это на что-то другое или избавиться от этого вообще?

Это мой сценарий

require ["enotify", "mailbox", "reject", "variables"];

if header :matches "to" ["*", "*", "*"] {
set "r1" "${1}";
set "r2" "${2}";
set "r3" "${3}";
}

if header :matches "from" "*" {
set "sender" "${1}";
}

#sets variables for position in the address and it works for CC and BC aswell.
#This is the way sieve works by setting position in the line for TO or FROM.


if header :matches "Subject" "SEC=SECRET" {
notify :importance "1"
            :message "SEC=SECRET Email Received"
                        "mailto:${r1}${r2}${r3}";
}

if header :matches "Subject" "SEC=TOP SECRET" {
notify :importance "1"
            :message "You have received an email with a SECRET or TOP SECRET classification from ${sender}. The message exceeds the classification of company's email system and has been discarded. The sender of the message has also been informed"
                        "mailto:${r1}${r2}${r3}";
}

if header :matches "Subject" "SEC=TOP-SECRET" {
notify :importance "1"
            :message "You have received an email with a SECRET or TOP SECRET classification from ${sender}. The message exceeds the classification of company's email system and has been discarded. The sender of the message has also been informed"
                        "mailto:${r1}${r2}${r3}";
}
#matches the Subject and if it containes SECRET or TOP SECRET
#sends notification to receivers specified in mailto:
#doesn't include the body of email

if anyof (header :contains "Subject" "SEC=SECRET",
       header :contains "Subject" "SEC=TOP SECRET",
       header :contains "Subject" "SEC=TOP-SECRET")
{

reject "Our systems have not been certified to accept emails classified as SECRET or TOP-SECRET. Your message has been deleted and the recipients have been informed.";

}

#matches the Subject, drops the body and sends notification to the sender with the message specified.