[Mimedefang] mimedefang altering emails

[Albert E. Whale, CISSP]

Zobel M. wrote:

>Hello,
>
>
>  
>
>>Warnings
>>There are some caveats you should be aware of before using MIMEDefang. MIMEDefang potentially alters e-mail messages. This breaks a "gentleman's agreement" that mail transfer agents do not modify message bodies. This could cause problems, for example, with encrypted or signed messages.
>>    
>>
>
>Well anyone has any experience where signed/encrypted emails got
>fuxxored by mimedefang?
>
>im curious if i should implement it while were heading to use
>signed/encrypted mails in the future.
>
>or is there a option where the mail gets in no way altered if it
>doesnt hit any filters?
>
>
>mfg
>
>Michel Zobel 
>Software Entwicklung 
>hnw health network GmbH i.G.
>  
>

Michel,

Signed and encrypted Emails should pass the fitlering without an issue.

If they are altered, and they are always sent from a Set of known IP 
Addresses, you can always exclude them from further scanning and then 
scan all of the other Email.

HTH.

-- 
Albert E. Whale, CISSP - Sr. Security, Network, and Systems Consultant
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