[exim] DKIM fail

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Author: menphis
Date:  
To: exim-users
Subject: [exim] DKIM fail
Hi,
today i enabled signning with DKIM in Exim 4.76 - here is my route config:

remote_smtp:
driver = smtp
dkim_domain = aira.cz
dkim_selector = x
dkim_private_key= /etc/exim/keys/dkim.private.key
dkim_canon = relaxed


and DNS's RR for domain:


x._domainkey.aira.cz.   100     IN      TXT     "v=DKIM1\; t=y\; k=rsa\;
p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhANMJ4yzdbmkkz5Ktt



Dc0xt79I7Uxf9Raqd3Nvlfw8EB5zoMnYgdcdpTRlhluDJ7wnrYqNV8


S71Zq4Z50jdBNnJtne1xjuYTnfdsQwfr/h3NEdUdFDuNOn1XNNAmmvWwQPwIDAQAB"                                                                                                                                                                                                                         



domainkey.aira.cz.     300     IN      TXT     "t=y\; o=~\;"


_adsp._domainkey.aira.cz. 300   IN      TXT     "dkim=unknown"




When i check DKIM's with send emails on address:
dkim-test@??? and check-auth@???,
about half of emails fail. On the end this mail i atteched two debug
from return emails from dkim-test@???. But when I
tried send emails on my second mail server, so he verified DKIMs for all
emails successfully.

My OS on server is stable Gentoo x86 with openssl-1.0.0d

Have you same idea, why dkim so often fails?

Thank you, and sorry for my terrible English.




Attached returs email for checker:

Firts email:

----- Begin Debug Log Output ----
a: ['v=1', 'a=rsa-sha256', 'q=dns/txt', 'c=relaxed/relaxed',
'd=aira.cz', 's=x',
'h=Content-Transfer-Encoding:Content-Type:Subject:To:MIME-Version:From:Date:Message-ID',
'bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=',
'b=P05WGYppwzu6O2IRkUeNuFGFvrAyZpXONT2G3dLyVgUkRZVxgcaUFTjVktnugoLXAznxnQeZ5MZujCO3LRScm42nf9wAws13Fi2uK/IkcvQgK0OROsvGEwwAFuBOzT53',
'']
sig: {'a': 'rsa-sha256', 'c': 'relaxed/relaxed', 'b':
'P05WGYppwzu6O2IRkUeNuFGFvrAyZpXONT2G3dLyVgUkRZVxgcaUFTjVktnugoLXAznxnQeZ5MZujCO3LRScm42nf9wAws13Fi2uK/IkcvQgK0OROsvGEwwAFuBOzT53',
'd': 'aira.cz', 'h':
'Content-Transfer-Encoding:Content-Type:Subject:To:MIME-Version:From:Date:Message-ID',
'bh': '47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=', 'q': 'dns/txt',
's': 'x', 'v': '1'}
bh: frcCV1k9oG9oKj3dpUqdJg1PxRT2RSN/XKdLCPjaYaY=
body hash mismatch (got frcCV1k9oG9oKj3dpUqdJg1PxRT2RSN/XKdLCPjaYaY=,
expected 47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=). Your server is
not signing messages properly or another server may be modifying the
body of your messages.

----- End Debug Log Output ----


Second Email:


a: ['v=1', 'a=rsa-sha256', 'q=dns/txt', 'c=relaxed/relaxed',
'd=aira.cz', 's=x',
'h=MIME-Version:Content-Type:Message-ID:Subject:Date:To:From',
'bh=Sb8WGoUjJNJtG/FfwmvhQy9uPZoo0vO8ahBE3Rz+wlE=',
'b=TMCmawCtQ4LEvies519qMmP96afmNb5esIAqeOzU5zN5bYBL5iVCgf/kYQXCfcEJ65t5xsDFcAF2Br7Us+Gtjh/whZrB8eX6JZgEe+pirbXEVO6u9mB2vWMGcxbaBe6l',
'']
sig: {'a': 'rsa-sha256', 'c': 'relaxed/relaxed', 'b':
'TMCmawCtQ4LEvies519qMmP96afmNb5esIAqeOzU5zN5bYBL5iVCgf/kYQXCfcEJ65t5xsDFcAF2Br7Us+Gtjh/whZrB8eX6JZgEe+pirbXEVO6u9mB2vWMGcxbaBe6l',
'd': 'aira.cz', 'h':
'MIME-Version:Content-Type:Message-ID:Subject:Date:To:From', 'bh':
'Sb8WGoUjJNJtG/FfwmvhQy9uPZoo0vO8ahBE3Rz+wlE=', 'q': 'dns/txt', 's':
'x', 'v': '1'}
bh: Sb8WGoUjJNJtG/FfwmvhQy9uPZoo0vO8ahBE3Rz+wlE=
modlen: 96
include_headers: ['MIME-Version', 'Content-Type', 'Message-ID',
'Subject', 'Date', 'To', 'From']
verify headers: [('mime-version', '1.0\r\n'), ('content-type',
'multipart/alternative;
boundary="_000_3BE0DEED8863E5429BAE4CAEDF6245650273762DC4FEAIRASRVaira_"\r\n'),
('message-id',
'<3BE0DEED8863E5429BAE4CAEDF6245650273762DC4FE@???>\r\n'),
('subject', '\r\n'), ('date', 'Thu, 16 Feb 2012 21:44:05 +0100\r\n'),
('to', '"dkim@???"
<dkim@???>\r\n'), ('from', 'Martin Duspiva
<martin.duspiva@???>\r\n'), ('dkim-signature', 'v=1; a=rsa-sha256;
q=dns/txt; c=relaxed/relaxed; d=aira.cz; s=x;
h=MIME-Version:Content-Type:Message-ID:Subject:Date:To:From;
bh=Sb8WGoUjJNJtG/FfwmvhQy9uPZoo0vO8ahBE3Rz+wlE=; b=;')]
verify digest: 28 37 44 c4 97 c1 d3 2a e8 e4 92 66 ee f6 1a 56 19 7b 7e
23 00 f5 b8 e7 ab a9 25 96 26 2a 78 dd
dinfo: 30 31 30 0d 06 09 60 86 48 01 65 03 04 02 01 05 00 04 20 28 37 44
c4 97 c1 d3 2a e8 e4 92 66 ee f6 1a 56 19 7b 7e 23 00 f5 b8 e7 ab a9 25
96 26 2a 78 dd
sig2: 00 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 30
31 30 0d 06 09 60 86 48 01 65 03 04 02 01 05 00 04 20 28 37 44 c4 97 c1
d3 2a e8 e4 92 66 ee f6 1a 56 19 7b 7e 23 00 f5 b8 e7 ab a9 25 96 26 2a
78 dd
TMCmawCtQ4LEvies519qMmP96afmNb5esIAqeOzU5zN5bYBL5iVCgf/kYQXCfcEJ65t5xsDFcAF2Br7Us+Gtjh/whZrB8eX6JZgEe+pirbXEVO6u9mB2vWMGcxbaBe6l

TMCmawCtQ4LEvies519qMmP96afmNb5esIAqeOzU5zN5bYBL5iVCgf/kYQXCfcEJ65t5xsDFcAF2Br7Us+Gtjh/whZrB8eX6JZgEe+pirbXEVO6u9mB2vWMGcxbaBe6l

v: 00 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 30 31
30 0d 06 09 60 86 48 01 65 03 04 02 01 05 00 04 20 48 7f cc d9 0b c9 b4
b3 0b 14 1c 5d 53 e3 a9 6e 0c 60 75 75 c1 67 d3 55 0c 56 f3 20 99 20 3b 6d