dkim and Mailscanner

Maarten mailinglists at feedmebits.nl
Fri Dec 4 20:22:52 UTC 2015


I the the message headers are exactly the same. So I sent an email to
auth-results at verifier.port25.com to get a report.
It's the Canonicalized Bodies that are different.

When the test passes I get my  dns records back:

Canonicalized Body:

DNS record(s):
    default._domainkey.feedmebits.nl. 86121 IN TXT "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDaf6SefY18HUDitRouHw9eP0zJ9W8BY2x+urENVAdmV/ghPjVnqjemJLBySGrXLiMiNO2Vs9js+3BVyblUZRj2CnK6uqUlkyWnJ9GUpZ8pfKZDP1s9gP0ASCDdsMzXEcNnPqyeko2jgbIn5eiZ6xeKwX/qV8JIQsTo/XzqWko7mwIDAQAB"
    default._domainkey.feedmebits.nl. 86121 IN TXT "o=~"

Public key used for verification: default._domainkey.feedmebits.nl (1024 bits)

And when the the test fails I get the following back in the body:

Canonicalized Body:
    '0D''0A'
    '0D''0A'
    --'0D''0A'
    This'20'message'20'has'20'been'20'scanned'20'for'20'viruses'20'and'0D''0A'
    dangerous'20'content'20'by'20'MailScanner,'20'and'20'is'0D''0A'
    believed'20'to'20'be'20'clean.'0D''0A'

At least I found where exactly it goes wrong, now to find where the problem comes from. 



On 12/04/2015 07:29 PM, Mark Sapiro wrote:
> On 12/04/2015 10:16 AM, Maarten wrote:
>> Is there way to get set mailscanner into verbose or debug log mode, so I
>> can see what's actually happening. Normal mode I can only see when it's
>> scanning a message etc.
>
> You could just compare the body of your sent message with the one that
> fails verification after receipt to see what's different.
>


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



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