Emails sent get a warning

[brict0001]

Dear,

I'm working for a Belgian Email provider. 

The email sent by one of our client (a well known Deutsche bank) to a skynet.be account, get a warning message "[Is deze mail veilig?] [Is this e-mail safe?] [Cet e-mail est-il sans danger?]". It was not the case previously. It is not spam as only client received them.

It seems that Skynet is protected by "IronPort Spam" and I looking to understand what is wrong with thus email.

Could you help me?

Part of the header:

X-IronPort-Outbreak-Delimiter: ------------ Suspicious threat disclaimer ends here ------------
X-IronPort-Original-Subject: TEST - Nieuwe obligaties bij Deutsche Bank
X-IronPort-Redirect-Domain: secure-web.cisco.com/%(auth)s/%(url)s
Subject: [Is deze mail veilig?] [Is this e-mail safe?] [Cet e-mail est-il sans
 danger?] TEST - Nieuwe obligaties bij Deutsche Bank
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AuAUzFzqyFNQqW+g/2dsb2JhbABDBgEPgkdHUlcBgnevMgGSIQQYAQaHYG8WdoIKAQGBfwIgHRsfDi8GAg0BCQICAgFyiEEBCJAwAYNkgyICk3h3hQiBd4lVAgFehhsRBoFDX4oKgjUBBxEBCYMFDzINBYE8gTKuH4NGOy8BgQsLAQEEAQ

[Robert Sherwin]

Looking at the anti-spam score, I can advise that this was scored low - and did not trip on the scale of spam, or possible spam.

Something else has to be coming into play in order to have this pre-pend the subject modification.  Seeing as that it isn't a standard [SPAM] or [SUSPECT SPAM], this most likely hitting something else in message processing -- perhaps based on subject?

Without full message tracking, would be hard to see where/why it is being tagged.  It may be also that there is another outside/3rd party scanning occurring that is triggering.

I hope this helps!

-Robert

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[brict0001]

Tks you for you answer.

However, it really looks liike Ironport is updating the subject.

I attached another email (I doesn't find back the first one).

If you wan help me, it would be great.

Tks in advance