[OpenStreetMap] #4480: mailinglists generate DKIM warnings

OpenStreetMap trac at openstreetmap.org
Sat Jul 14 10:47:15 BST 2012


#4480: mailinglists generate DKIM warnings
-------------------------------+--------------------------------------------
 Reporter:  zwiskle@…          |       Owner:  rails-dev@…                
     Type:  defect             |      Status:  new                        
 Priority:  minor              |   Milestone:                             
Component:  website            |     Version:                             
 Keywords:                     |  
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 by chance I found messages like the below in my mailserver.
 I assume, the following happens:[[BR]]

 - a gmail-user sends a message to the list[[BR]]
 - gmail (also a bunch of others) signes the mail using DKMI (1)[[BR]]
 - the mail is processed by openstreetmap/ mailman (?)[[BR]]
 -- the mail-headers are manipulated by mailman[[BR]]
 - my mail-server (exim4, debian) trys to validate the dkim and interprete
 it as a "fail"[[BR]]


 a potential solution is to tell mailman to remove dkim-headers. ( better
 no dkim that a false-negative )

 see e.g. https://bugs.launchpad.net/mailman/+bug/557493 for a
 explenation.[[BR]]
 --> REMOVE_DKIM_HEADERS = Yes

 from my mailservers logfile:[[BR]]
 2012-07-14 11:21:35 1SpyXf-00052O-9o DKIM: d=gmail.com s=20120113
 c=relaxed/relaxed a=rsa-sha256 '''[verification failed - signature did not
 verify (headers probably modified in transit)]'''[[BR]]
 2012-07-14 11:21:36 1SpyXf-00052O-9o <= dev-bounces at openstreetmap.org
 H=shenron.openstreetmap.org [89.16.179.150] P=esmtps
 X=TLS1.0:RSA_AES_256_CBC_SHA1:32 S=4884
 id=CANQHZrhhF7GnygbK=yZfh6+C_YdgKT61Cyfdw+TeOecPxHCN9Q at mail.gmail.com[[BR]]
 2012-07-14 11:21:36 1SpyXf-00052O-9o => [someone who is on that list]
  R=local_user T=maildir_home[[BR]]
 2012-07-14 11:21:36 1SpyXf-00052O-9o Completed

 1] dkim: http://en.wikipedia.org/wiki/Dkim

-- 
Ticket URL: <https://trac.openstreetmap.org/ticket/4480>
OpenStreetMap <http://www.openstreetmap.org/>
OpenStreetMap is a free editable map of the whole world



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