On 12/29/2010 2:33 PM, Phil Howard wrote:
On Wed, Dec 29, 2010 at 12:38, Noel Jones<njo...@megan.vbhcs.org> wrote:
In postfix, you can use a header_checks IGNORE rule to remove unwanted
headers. Be careful that your rule only matches the exact header you want
to remove.
As I understand header_checks, it removes only what is already in the
message. When my "[127.0.0.1]:10025 inet n - n - - smtpd" (from
master.cf) instance gets a message from amavis, it inserts its own new
Received: header that I don't want. How could header_checks remove
that and not remove the one that was insert when the public facing
smtpd got the mail (that one I want to keep).
Craft a regular expression that matches the header you want to
remove and won't match others.
- a usable quick example, but could be improved:
/^Received: from .*\[127\.0\.0\.1\].*by server.example.com/ IGNORE
Or just ignore the extra headers, that's what most everyone else does.
I was trying to. It turns out to not be trivial. If I could find an
easier way to just not have them inserted at all, that would be
better. Otherwise I will have to do some C code to properly select
the desired headers. If I can stop amavis and the 2nd smtpd from
inserting more, then it's easy to just look at the first Received
header. The difficulty is because at a point after mail has already
been delivered (Dovecot deliver will have already delivered
somewhere), I'm looking for strings in the headers that the headers
from amavis and the 2nd smtpd will be false positive matches on.
Sounds as if you need to adjust what you're looking for too.
-- Noel Jones
