How to Remove X-headers

[Julian Field]

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No, you can't use a regular expression to define which headers you want 
to remove, just a list of header names. I'm fairly sure the 
documentation does not imply that you *can* use regexps here.

On 12/3/09 14:14, Glenn wrote:
> Oh, sorry, I did not read Joost's post carefully enough to see the difference
> between his expression and mine.  However, I just tested his expression, /^X-
> Mime.*\:/ , and it doesn't work either.  I am wondering if MailScanner can
> use Perl expressions in this ruleset?  Thanks again.   -Glenn.
>
> ---------- Original Message -----------
> From: "Glenn"<glenn at mail.txwes.edu>
> To: MailScanner discussion<mailscanner at lists.mailscanner.info>
> Sent: Thu, 12 Mar 2009 09:02:37 -0500
> Subject: Re: How to Remove X-headers
>
>    
>> Thanks for all the attention, but I'm afraid I still have the same
>> problem.  Regardless of the propriety of doing so, I would like to
>> be able to filter headers using the "Remove These Headers" ruleset,
>>   and I can't get it to work with Perl regular expressions.  Joost's
>> post seems to confirm that I am using an expression that should
>> remove the X-MimeOLE: header, but it doesn't.  Can anyone shed light
>> on this?  Thanks.   -Glenn.
>>
>> ---------- Original Message -----------
>> From: Joost Waversveld<joost at waversveld.nl>
>> To: MailScanner discussion<mailscanner at lists.mailscanner.info>
>> Sent: Thu, 12 Mar 2009 09:38:58 +0100
>> Subject: Re: How to Remove X-headers
>>
>>      
>>> /^XMime.*\:/   would match XMime<something>  (and not X-
>>> Mime<something>)
>>>
>>> The regular expression should be /^X-Mime.*\:/
>>>
>>> Best regards,
>>>
>>> Joost Waversveld
>>>
>>> Alex Broens wrote:
>>>        
>>>> On 3/11/2009 10:50 PM, Glenn wrote:
>>>>          
>>>>> We use MailScanner and Postfix on a mail gateway server and forward
>>>>> mail to an internal Microsoft Exchange 2003 server.  Evidently,
>>>>> enough X-headers have accumulated in an Exchange database to cause a
>>>>> problem, so we need to remove X-headers before they are forwarded to
>>>>> the Exchange server.
>>>>>
>>>>> There is a line in MailScanner.conf that allows us to name whatever
>>>>> headers we want to remove ("Remove These Headers"), but this raises
>>>>> some questions.  If we just blanket remove all X-headers, won't this
>>>>> defeat features of MailScanner that depend on MailScanner adding
>>>>> headers?
>>>>>
>>>>> According to hints in the MailScanner rules directory, we should be
>>>>> able to use regular Perl expresssions to create a ruleset to exclude
>>>>> certain headers from the delete list.  My problem is that I don't
>>>>> have a clue how to write regular Perl expressions.  From what I've
>>>>> read online, for example, the lines below should be equivalent, but
>>>>> when I use the Perl expression in the ruleset it doesn't work.
>>>>>
>>>>> From:  [ipaddress]  X-MimeOLE:    ##this removes the X-MimeOLE header
>>>>>
>>>>> From:  [ipaddress]  /^XMime.*\:/  ##this doesn't
>>>>>
>>>>> I know this isn't a Perl forum, but I'm hoping that someone who has
>>>>> tried this can enlighten me.  If I could just get a simple expression
>>>>> to work, I might be able to build what I need.  Thanks.   -Glenn.
>>>>>            
>>>> Before you start breaking MIME headers, who told you this or what MS
>>>> KB article covers this?
>>>>
>>>>          
>>> -- 
>>> Joost Waversveld
>>>
>>> -- 
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>>> mailscanner at lists.mailscanner.info
>>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>>
>>> Before posting, read http://wiki.mailscanner.info/posting
>>>
>>> Support MailScanner development - buy the book off the website!
>>>        
>> ------- End of Original Message -------
>>
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>>
>> Before posting, read http://wiki.mailscanner.info/posting
>>
>> Support MailScanner development - buy the book off the website!
>>      
> ------- End of Original Message -------
>
>    

Jules

- -- 
Julian Field MEng CITP CEng
www.MailScanner.info
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