problem with base64 decoding

[luiscosta]

Since last week, I've been getting a few random emails that appear totally garbled (see print-screen below). From looking at the message source, the only thing in common between them I was able to find was the base64 encoding, so I'm guessing that's somehow related to this problem.

As far as I know, Thunderbird does decode base64 encoding, correct? Any ideas as to why this is happening?

Here's the header for one of the problematic emails:
From - Fri Jul 31 12:44:10 2009
X-Account-Key: account2
X-UIDL: 20967zZwZ6ei0Ix20090731124537
X-Mozilla-Status: 0011
X-Mozilla-Status2: 00800000
X-Mozilla-Keys:
Received: from smtp06.bis.eu.blackberry.com by mail.traducta.pt
with SMTP (Code-Crafters Ability Mail Server 2.63);
Fri, 31 Jul 2009 12:45:35 +0100
Received: from bxe1017.bisx.produk.on.blackberry (bxe1017.bisx.produk.on.blackberry [172.24.204.32])
by srs.bis.eu.blackberry.com (8.13.7 TEAMON/8.13.7) with ESMTP id n6VBhtZT018322;
Fri, 31 Jul 2009 11:45:00 GMT
X-rim-org-msg-ref-id: 1936132050
Disposition-Notification-To: xxxxxxxxx
Message-ID: <1936132050-1249040700-cardhu_decombobulator_blackberry.rim.net-429307611-@bxe1017.bisx.produk.on.blackberry>
Content-Transfer-Encoding: base64
Reply-To: xxxxxxxxxxx
X-Priority: Normal
Sensitivity: Normal
Importance: Normal
To: xxxxxxxxxxxxx
Cc: xxxxxxxxxxxxxxxxxx
Subject: Re: ambiente remoto muito lento
From: "=?utf-8?B?VsOibmlhIENhc3RhbmhlaXJh?=" xxxxxxxxxxxxxxxxxxxx
Date: Fri, 31 Jul 2009 11:43:59 +0000
Content-Type: text/plain; charset="Windows-1252"
MIME-Version: 1.0

[Rod Whiteley]

Yes, Thunderbird decodes base64. Select the message and choose View – Message Source to see what is really in the message. Perhaps it is not really encoded, and the Content-Transfer-Encoding header is wrong. Otherwise copy and paste the first couple of lines of the message source in your reply here.

[luiscosta]

Yes, Thunderbird decodes base64. Select the message and choose View – Message Source to see what is really in the message. Perhaps it is not really encoded, and the Content-Transfer-Encoding header is wrong. Otherwise copy and paste the first couple of lines of the message source in your reply here.

The content of the message source appears like this:

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[Rod Whiteley]

Nothing wrong with that. It reads: "Ok Luis, é verdade. Na hora do blackout até o AR deixou d..." I do not know why your Thunderbird does not decode it but mine does.

[luiscosta]

Nothing wrong with that. It reads: "Ok Luis, é verdade. Na hora do blackout até o AR deixou d..." I do not know why your Thunderbird does not decode it but mine does.

This is getting stranger by the minute... I just realized this only happens on emails which are replies to (some of) our emails. And on top of that, I just sent an email to a person with which I had this problem (of the reply showing up all garbled), and her reply to my last email is displayed correctly. I'm totally clueless as to what is happening here.

[Rod Whiteley]

If you would like to paste the entire message source, unmodified, in a private message to me, I'll try to investigate further.

[luiscosta]

If you would like to paste the entire message source, unmodified, in a private message to me, I'll try to investigate further.

Thank you, I will do that.

[Rod Whiteley]

A "security" program intercepted the message and added a line that reads "Bayesian score: 31.39" at the top. This destroys the integrity of the encoded message. The program that intercepted the message has a bug.

[luiscosta]

Thank you so much! I'm gonna deactivate the bayesian filter temporarily to see if that solves the problem.