How to rewrite headers in outgoing mail messages

Question

How to rewrite headers of outgoing mail messages?
For example, change
From: [email protected]
to
From: "Mailer-Daemon at server.example.com" <MAILER-DAEM[email protected]>
?

Answer

This feature is not yet implemented in Plesk UI, but a feature request can be created on the Plesk UserVoice

As a workaround, use Postfix 
header_checks
:

1. Connect to the server via SSH ;

2. Add a
header_checks
entry to the
/etc/postfix/main.cf
configuration file: the file specified will contain regular expressions for the rewriting:

   # postconf -e “header_checks = pcre:/etc/postfix/header_checks”

3. If the file
/etc/postfix/header_checks
does not exist, create it:

   # [ ! -f /etc/postfix/header_checks ] && >/etc/postfix/header_checks

4. Modify the
/etc/postfix/header_checks
file. For example, to rewrite all headers with
From: [email protected]
to
From: "Mailer-Daemon at server.example.com" <[email protected]>
, add the following line to the end of the file:

   /^From:[email protected]/ REPLACE From: "Mailer-Daemon at server.example.com" <[email protected]>

   To hide server IP address from headers:

    /^Received:s+.*/ IGNORE

   Note: For more information on regular expressions, refer to the PCRE documentation by php.net .

   To change Message-ID:

   /Message-Id:s+<(.*?)@server.example.com>/ REPLACE Message-Id: <[email protected]>

5. Reload Postfix to apply the enabled
header_checks
:

   # service postfix reload 

• If a regular expression was applied to the mail message, a similar line will be appended to the
/var/log/maillog
log file:

  server postfix/cleanup[21124]: E5CD0225EF9: replace: header From: [email protected] (Mail Delivery System) from local; from=<> to=  [email protected]  : From: "Mailer-Daemon at server.example.com"  [email protected] 

Note: For more information on header_checks feature in Postfix, refer to the Postfix documentation .