Bj?rn T Johansen:
> > > > Please read the documents that I referred you to.
> > >
> > > Yes, I did but I am not sure what the solution is? I see that the D flag
> > > adds a Delivered-To header and that
> > > it checks the mail to see if it already has a Delivered-To header and the
> > > message is returned as undeliverable if
> > > so, as of version 2.5.x...
> > > But is the solution to this to remove the D flag from the pipe transport?
> > > Or should I increase
> > > dovecot_destination_recipient_limit from 1 to 2?
> >
> > Given this description:
> >
> > D Prepend a "Delivered-To: recipient" message header
> > with
> > the envelope recipient address. Note: for this to
> > work,
> > the transport_destination_recipient_limit must be 1
> > (see
> > SINGLE-RECIPIENT DELIVERY above for details).
> >
> > The D flag also enforces loop detection (Postfix 2.5
> > and
> > later): if a message already contains a
> > Delivered-To:
> > header with the same recipient address, then the
> > message
> > is returned as undeliverable. The address comparison
> > is
> > case insensitive.
> >
> > This feature is available as of Postfix 2.0.
> >
> > Which solution would you pick when mail is returned as undeliverable
> > because a "mail forwarding loop" was detected?
> >
> > You will have to use your own brain cycles.
> >
>
> Well, I just thought that the D flag was included for a reason
> and that removing the flag maybe would break something else...
> Instead of wasting time to write such long answer maybe a simple
> yes or no would be sufficient....... Isn't that the idea with a
> mailinglist, getting help and verify solutions or am I misunderstanding
> something??
No, the purpose is to help you choose the best solution. It's your
system. You decide what is best.
- One possibility is to stop using the D flag and thereby disable
loop detection in the pipe mailer (which didn't work before
Postfix 2.5).
However it is possible that you have other mail software that
depends on the presence of this header. Only you can make that
determination, not this mailing list.
- Another possibility is to keep loop detection, and to fix the
system that falsely prepends the Delivered-To: header BEFORE mail
is given to Postfix.
Wietse
