Hi:
After reading http://www.irbs.net/internet/postfix/0703/1471.html and http://www.irbs.net/internet/postfix/0703/1519.html
to help with my autoreply capability (and making sure i get it as
close to "right" as possible!), I am trying to ensure that I can take
all reasonable measures to get the autoreplies right (when they are
sent). to this end, it's important that I capture the envelope-sender
of each message in addition to the "From:" header, but I am having
difficulty doing so.
I have tried to send the message to my autoreply script via bcc: (via
always_bcc or recipient_bcc_maps) to a local autoreply address which
then has the transport autoreply: which calls the autoreply script via
pipe or is a local alias that resolves to '|/path/to/autoreply/
script'. The transport mechanism has the ability to pass information
from postfix, but doesn't seem to capture the envelope-sender correctly.
I have tried using every single one of the macros listed in http://www.postfix.com/pipe.8.html
to no avail. I have even used some macros that are not listed, but
I've found in other examples as I've searched for solutions.
This happens with mail sent to alias addresses as well as virtual
mailboxes.
Some e-mails from lists to which I subscribe include a "Sender: "
header which looks like it contains the envelope-sender. Mail that
shows up in my standard ISP account (not ever touching my postfix
installation) seems to include the "Return-Path: " header which
includes the envelope-sender.
Leading me to two questions:
1) on-topic: How can I be sure I can find the envelope-sender for
every message and pass that to my script? Or maybe I should ask it
this way: How do I get postfix to keep the correct envelope-sender?
2) broader: Is the list of macros that can be used as arguments to a
pipe command (as listed in http://www.postfix.com/pipe.8.html)
complete? or are there others (like the ones I've found)? and where
can I find a complete list?
I would appreciate any help, direction or pointers that anyone can
offer.
It might help to know that messages entering my postfix server are
then passed to a content_filter (Dspam, specifically, using
content_filter=dspam:dspam), which then re-injects them back into
postfix which then handles them and sends them to a delivery agent
(mostly maildrop, sometimes virtual). If the order of this (and the
passing through dpsam is affecting the envelope-sender, is there way
to either get the message to the autoreply script before it goes to
dspam (I don't want that, since I don't autoreply to spam messages) or
a way to pass the envelope-sender through dpsam, or something else I
haven't considered?
Thank you!! and happy new year!!
