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postfix-users: Re: question about notifications

Re: question about notifications

From: Brian Evans - Postfix List <grknight_at_nospam>
Date: Thu Oct 21 2010 - 19:28:26 GMT

On 10/21/2010 3:06 PM, John Watson wrote:
> I am close to getting the always_bcc option working. I created an
> alias in the mysql alias table that has 'autoreply' mapped to '|
> /path/to/myscript'. I setup always_bcc to send messages to
> 'autoreply'. In the /var/log/maillog I can see that postfix is
> attempting to cc the message to my alias but rather than executing the
> command it is making an address of the form:
> "| /path/to/ <>" and
> then trying to send it on.

If this a mysql map in virtual_alias_maps, then it will not work.
virtual_alias_maps MUST resolve to an address.
To run a piped command, you MUST EITHER deliver to a domain listed in
mydestination and then alias to command in alias_maps OR set up a
transport in and point the address in transport_maps to the
specified pipe transport.

See under "Mailing Lists" or
"Autoreplies" for examples.

> I have looked at content filters and started to look at writing a
> custom MDA per
> but
> I really want this always_bcc solution to work.
> Does anyone know how to make postfix execute the command rather than
> treat it as an address? I have seen examples that had "|
> /path/to/command" and it looked like it was supposed to just work but
> those examples weren't using mysql to store the account info.
> Thanks in advance.
> -John Watson.
> On Wed, Oct 20, 2010 at 2:15 PM, mouss <
> <>> wrote:
> Le 20/10/2010 21:04, John Watson a écrit :
> Hello,
> I am using postfix in conjunction with squirrelmail to build
> a business application. One of the requirements that I have is
> that when an email is received in one of the postfix mail
> boxes an alert is generated. In our case we will be sending a
> standard message to another email but in general we might want
> to run arbitrary code when messages are received by postfix.
> It seems that some of the work that has been done with virus
> scanners uses a server hook to examine all the messages that
> pass through the server. Can anyone tell me what that is
> called or provide a pointer to more detail and is this the
> best way to solve a problem like this?
> you can do that
> - in your MDA (dovecot, maildrop, ...).
> - by specifying a script as an MDA for those mailboxes that you
> want...
> I personally prefer the "run the action later".
> - keep delivery as it is
> - have a script that does pop3 (or imap) periodically. this script
> can do anything you want
> the advantage is that
> - bugs in your script won't cause trouble to your delivery
> - if you're under heavy mail stream, you don't add yet more load
> on your server