Mailscanner disturbs my domainkey?

Alex Neuman alex at nkpanama.com
Fri Sep 30 20:01:20 IST 2005


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Lars Kristiansen wrote:
>> I've added domainkeys with dk-milter to sendmail.
>>
>> The verifier at http://senderid.espcoalition.org/ shows the signature is
>> there, but it does not verify.
>>
>> Is mailscanner messing up the headers so the signature is wrong?
>>     
>
> According to the rfc,
> [ http://www.ietf.org/internet-drafts/draft-delany-domainkeys-base-02.txt ]
> , it is a signature of the mail, including the headers below the
> DomainKey-Signature.
> As far as I can understand new headers need to be put before the signature
> not to conflict.
>
>
> --
> Lars
>
>
>   
>> 8uye at senderid.espcoalition.org
>>
>> The verifier says: DomainKey-Status: bad: Signature failed verification
>>
>> DomainKey-Signature: a=rsa-sha1; s=arnold; d=neland.dk; c=nofws; q=dns;
>> 	h=message-id:from:to:subject:date:mime-version:content-type:
>> 	content-transfer-encoding:x-priority:x-msmail-priority:x-mailer:x-mimeole;
>> 	b=KqKCCl3LSAL7ztA0QktPMHZSMnAbwwRYUeMJWowfD0SZt5PbuD/mWy92a1gtu+eHa
>> 	JA8njDRZ4zh0iX239dsmw==
>>
>> ; <<>> DiG 9.3.1 <<>> -t txt arnold._domainkey.neland.dk @ns4.gratisdns.dk
>> ; (1 server found)
>> ;; global options:  printcmd
>> ;; Got answer:
>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41315
>> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5
>>
>> ;; QUESTION SECTION:
>> ;arnold._domainkey.neland.dk.   IN      TXT
>>
>> ;; ANSWER SECTION:
>> arnold._domainkey.neland.dk. 43200 IN   TXT     "g=\; k=rsa\; t=y\;
>> p=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMDitcv/6R1RMjPiGHCiIcTnvVsA+A3XGg5fCf2yKUrrf7NmJw7GB9Cj35GZavzHwOVSUxkQiRUknt/+2jJMS8UCAwEAAQ=="
>>
>> What's wrong? :-(
>>     
>
>   
>> --
>> This message has been scanned for viruses and
>> dangerous content by MailScanner, and is
>> believed to be clean.
>> MailScanner thanks transtec Computers for their support.
>>
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>>     
>
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>   
In any case, any good info, pointers, tips on getting domainkeys to work 
using sendmail+MailScanner would be appreciated. I've already set up 
SPF, but having domainkeys as well would be a plus.

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