You can use bombSubjectRe, bombSenderRe and bomCharSets for the easy steps 
like your regex.

How ever , I think something like that should do the tick.

'bombSkipHeaderTagRe','Regular Expression to Identify skipped Tags in 
Header Part*',
  'Regular Expression to define header tags, that will be skipped for 
bombSuspiciousRe, bombHeaderRe, bombRe and blackRe - like 
'DKIM-Signature|Domainkey-Signature' - the always followed collon (:) is 
added by assp. 
For example:
file:files/bombskipheadertagre.txt'


Thomas









Von:    Michael Thomas <m...@mathbox.com>
An:     ASSP development mailing list <assp-test@lists.sourceforge.net>, 
Datum:  20.08.2013 10:35
Betreff:        Re: [Assp-test] Antwort: Exclude DKIM-Signature from 
bombheaderre matching



Thomas,

1. ASSP has a DKIM function that establishes whether or not the DKIM is 
valid.

2. If one is using the DKIM function, then regex matching parts of the 
DKIM Signature has no value for me or less value than false matches.

3. The DKIM signature contains a hash, which itself can contain any 
letter a-z, in sufficient length and randomness, that matches can occur 
on unwanted words or phrases.

Example, I have the word "dildo" (no quotes) as a regex.
dildo=>7
Which by chance, matched a sub-string in the DKIM hash, which is not 
useful. However, if it matched in the From, To, Subject, or Received, 
that is desirable. Yes, it is possible to write four complicated regex 
to match only the desired combination.

Having considered and failed to come up with any reason I would attempt 
to match a DKIM Signature, I thought it might be useful and possibly CPU 
cycle saving, to optionally remove the DKIM before offering the headers 
to bombheaderre processing.


Michael Thomas
Mathbox
978-687-3300
Toll Free: 1-877-MATHBOX (1-877-628-4269)

On 8/20/2013 2:43 AM, Thomas Eckardt wrote:
> Yes - it is possible, but why ? Simply write the rexec right - so that 
is
> does not match a DKIM signature.
>
> Thomas
>
>
>
>
> Von:    Michael Thomas <m...@mathbox.com>
> An:     ASSP development mailing list <assp-test@lists.sourceforge.net>,
> Datum:  20.08.2013 03:35
> Betreff:        [Assp-test] Exclude DKIM-Signature from bombheaderre
> matching
>
>
>
> Thomas,
>
> Would it be possible by supported check box or through personal code
> modification to exclude the DKIM-Signature from bombheaderre matching?
>
>
>
> 
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