I am using postfix and already usHi. I am using postfix and already using a script as a content_filter which re-injects back to smtpd to all users, but before this happens, I would like to make a copy of the email as well. Do I need multiple content_filters? This does not need to get re-injected back to smtpd since I am just looking to make a copy of the email so I don't think I need to pass this off into my other script. It should be separate. An email should be copied to a local dest as well as go through the script which goes out through smtpd to deliver the email to the recipient. So this is all for just outgoing emails. I am pretty sure it has something to do with using the pipe and to a file but would like guidance on proper syntax and if I should be using a script, two content_filters, and how those two can be configured to work concurrently. I also don't think I can use the always_bcc option here since it would just make a copy of the email AFTER it goes through the current content_filter, unless I am wrong about that. Thanks for any help.

  • Yeah, you're right about the always_bcc. If you're looking to write a pipe script to copy the email, it should be fairly straight forward.. though you do need to decide how you store your copy. – NickW Feb 23 '14 at 9:54

Yes I was thinking about that. I was thinking the script below could catch the email from STDIN and feed it to a file but this file would need to be unique so I was thinking something along the lines of using the date command up until the milliseconds just in case more than 1 person sends an email at the same time. The file must be unique. Also the proper syntax in master.cf would be appreciated but this is what I think could work:

$file = fopen("/tmp/postfixtest", "a");
fwrite($file, "Script successfully ran at ".date("Y-m-d H:i:s")."\n");

// read from stdin
$fd = fopen("php://stdin", "r");
$email = "";
while (!feof($fd)) {
    $line = fread($fd, 1024);
    $email .= $line;

fwrite($file, $email);


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.