AW: HMM got lmtp dupicate entries HOW and WHY?

I JUST NOTICED THAT NOT ALL MAILS LOSING THEIR SUBJECTLINE
(TB AND SQUIRRELMAIL).
THIS ONE HAS NO SUBJECT ALTHOUGH IT HAS ONE USUALLY. THIS IS
THE COMPLETE HEADER:
RETURN-PATH: NTBDENOTEBOOKSBILLIGER.DE
RECEIVED: FROM HQ.CP-DEV.DE ([80.237.188.210]:57376
HELO=WEB4.CP-DEV.DE)
     BY PRIMARY.RACKIT.DE
     WITH ESMTP (EXIM 4.67) (ENVELOPE-FROM <NTBDENOTEBOOKSBILLIGER.DE>)
     ID 1JWPCI-0000HX-OD FOR MAILSIMONLANGE.DE; TUE, 04 MAR
2008 05:56:14 +0100
RECEIVED: FROM NTBDE BY WEB4.CP-DEV.DE WITH LOCAL (EXIM
4.50)
     ID 1JWPBM-0005RQ-5W FOR MAILSIMONLANGE.DE; TUE, 04 MAR
2008 05:55:42 +0100
TO: MAILSIMONLANGE.DE
SUBJECT: [WERBEMAIL] SCHWEINDERL-SUCH-AKTION AUF
NOTEBOOKSBILLIGER.DE -
     JETZT TEILNEHMEN!
FROM: NOTEBOOKSBILLIGER.DE <NEWSLETTERNOTEBOOKSBILLIGER.DE>
SENDER: NEWSLETTERNOTEBOOKSBILLIGER.DE
MESSAGE-ID: <E1JWPBM-0005RQ-5WWEB4.CP-DEV.DE>
DATE: TUE, 04 MAR 2008 05:55:42 +0100
MIME-VERSION: 1.0
CONTENT-TYPE: MULTIPART/ALTERNATIVE;
     BOUNDARY=AE8CBEF56267E6E4325D9967C16C5624



BUT THIS MAIL HAS ITS SUBJECT AGAIN. LOOK AT THE HEADER:
RETURN-PATH: CONSTANTINFILMMEDIANETWORX.DE
RECEIVED: FROM BABELFISH.INTRA.MEDIANETWORX.DE
([62.128.28.148]:4789)
     BY PRIMARY.RACKIT.DE
     WITH ESMTP (EXIM 4.67) (ENVELOPE-FROM
<CONSTANTINFILMMEDIANETWORX.DE>)
     ID 1JWUHJ-00022T-CH FOR MAILSIMONLANGE.DE; TUE, 04 MAR
2008 11:48:37 +0100
RECEIVED: FROM MNX1.INTRA.MEDIANETWORX.DE
(MNX1.INTRA.MEDIANETWORX.DE [62.128.13.83])
     BY BABELFISH.INTRA.MEDIANETWORX.DE (GMS
15.00.3626/KX0677.00.11DC1039)
     WITH ESMTP ID UHXCLJAA FOR MAILSIMONLANGE.DE;
     TUE, 4 MAR 2008 11:47:49 +0100
X-UID: B92EE197-54D9-4DC8-A2B2-26975FA9F53A
FROM: "CONSTANTIN FILM PRESSESERVICE"
<CONSTANTINFILMMEDIANETWORX.DE>
TO: "SIMON LANGE" <MAILSIMONLANGE.DE>
DATE: 4 MAR 2008 11:47:49 +0100
SUBJECT: DIE WELLE FEIERT PREMIERE IN BERLIN
MESSAGE-ID: <10474972270135BABELFISH.INTRA.MEDIANETWORX.DE>
X-DNSBL: 0
X-ANTISPAM: CHECKED FOR RESTRICTED CONTENT BY GORDANO'S
ANTISPAM SOFTWARE
MIME-VERSION: 1.0
CONTENT-TYPE: MULTIPART/ALTERNATIVE;
    
BOUNDARY=--BOUNDARY_958_B6EE5DFF-6D2C-4F81-B7FF-017D65809BC5



BOTH HAVE A RETURN PATH... SO IM A BIT CONFUSED. IF THE
RETRNPATH IS RESPONSIBLE WHY IT DOES AFFECT THE SUBJECT?!
ITS ON BOTH HEADERS.

SIMON

-----URSPRüNGLICHE NACHRICHT-----
VON: DBMAIL-BOUNCESDBMAIL.ORG [MAILTOBMAIL-BO
UNCESDBMAIL.ORG] IM AUFTRAG VON PETER RABBITSON
GESENDET: DIENSTAG, 4. MäRZ 2008 12:35
AN: DBMAIL MAILINGLIST
BETREFF: RE: [DBMAIL] HMM GOT LMTP DUPICATE ENTRIES HOW AND
WHY?

JOHN FAWCETT WROTE:
> THERE SHOULD ONLY BE ONE RETURN-PATH HEADER AND THAT
SHOULD BE WRITTEN
> BY THE FINAL DELIVERY AGENT, SO THERE ISN'T MUCH
ALTERNATIVE HERE.
> 
> <SNIP>
> 
> RETURN-PATH HEADERS SHOULD ONLY BE USED FOR FINAL
DELIVERY,
> SO SHOULD NOT BE ADDED TO FORWARDED MESSAGES. HOWEVER
MTAS SHOULD
> REMOVE EXISTING RETURN-PATH HEADERS, SO I DOUBT THIS
WILL BE A
> PROBLEM.
> 

I TRIED THIS - DISABLED ADDITION OF RETURN-PATH IN POSTFIX
(REMOVED THE R 
FLAG). THIS SOLVES THE PROBLEM WITH 2.9, BUT THEN MY EMAILS
END UP WITH NO 
RETURN-PATH AT ALL (BOTH UNDER 2.7 AND 2.9). I AM CURRENTLY
BACK TO 2.7, WITH 
RETURN-PATH APPEND ENABLED IN THE MTA (IT CONSIDERS
DBMAIL-SMTP THE FINAL 
DELIVERY).
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