Prevent amavis from obliterating spam headers

[Olivier Nicole]

Quanah, 

> Customers who have external scanners running SA prior to hitting Zimbra's 
> SA install have found that Amavis will obliterate existing SA headers. 
> Additionally, redirecting an email that was previously scanned by SA also 
> results in Amavis obliterating the existing SA headers.
>
> Is there a method in which Amavis can be configured to preserve existing 
> headers?

My understanding is there is no way to do that. How can you be sure that
the pre-existing headers are genuine? They could have been added by a
spammer, in order to make you beleive the message is safe and need no
further checking.

If you trust some customers to have a proven anti-spam solution, you
could redirect their mail to completely by-pass amavis (or the SA part
in amavis), but you leave them exposed to what their own anti-span can
or can't do.

best regards,

Olivier

>
> <https://bugzilla.zimbra.com/show_bug.cgi?id=96532> has the general user 
> reports.
>
> Thanks,
> Quanah
>
> --
>
> Quanah Gibson-Mount
> Platform Architect
> Zimbra, Inc.
> --------------------
> Zimbra ::  the leader in open source messaging and collaboration
>

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