Bug: accented attachment name won't reach Outlook
Status: RESOLVED
Priority: --
Resolution: INVALID
Created: 2020-11-30 19:03:02+00:00
Resolved: 2021-11-02 01:40:44+00:00

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Steps to reproduce:

sending mail with attachment named with special characters (eg. 'łłłłłł')


Actual results:

Outlook showed empty message no attachment


Expected results:

when the same is sent from Outlook to Thunderbird attachment attachment shows OK.

from TB: (to Outlook)
Return-Path: <krzysztof.szlesinski@naprzod.pl>
X-Original-To: krzysztof.szlesinski@naprzod.pl
Delivered-To: krzysztof.szlesinski@naprzod.pl
Received: from localhost (localhost [127.0.0.1])
	by poczta.naprzod.pl (Postfix) with ESMTP id F135D29E007F
	for <krzysztof.szlesinski@naprzod.pl>; Mon, 30 Nov 2020 19:40:21 +0100 (CET)
Authentication-Results: poczta.naprzod.pl (amavisd-new);
	dkim=pass (1024-bit key) reason="pass (just generated, assumed good)"
	header.d=naprzod.pl
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=naprzod.pl; h=
	content-language:content-type:content-type:mime-version
	:user-agent:date:date:message-id:from:from; s=default; t=
	1606761621; x=1608576022; bh=JdETTAfkCuwKBf3FT3OG8icBHk2eiP93BA5
	uEj8jCMQ=; b=OM3mHELYQFTVW7rCXCquoG62s3ucKAkB9YIDSYf7mHOBb/1nNn5
	A1xafBiiOrVDYkQil5OYrQ/Jl6D1tv60sJ8ewHZOZmSzmp9aY5kiLpRC13JsVhEQ
	3rFoaHhDUyWK8TKtaV8TDixmIP8xIwYqoxZ3Dmi+m2hea0vu2UKnF5eA=
X-Virus-Scanned: Debian amavisd-new at poczta.naprzod.pl
Received: from poczta.naprzod.pl ([127.0.0.1])
	by localhost (poczta.naprzod.pl [127.0.0.1]) (amavisd-new, port 10026)
	with ESMTP id GU54kApjsWGr for <krzysztof.szlesinski@naprzod.pl>;
	Mon, 30 Nov 2020 19:40:21 +0100 (CET)
Received: from [192.168.0.134] (unknown [185.48.176.50])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	(Authenticated sender: krzysztof.szlesinski@naprzod.pl)
	by poczta.naprzod.pl (Postfix) with ESMTPSA id 0FE0729E007B
	for <krzysztof.szlesinski@naprzod.pl>; Mon, 30 Nov 2020 19:40:21 +0100 (CET)
To: =?UTF-8?Q?Krzysztof_Szlesi=c5=84ski_=28kontakt=29?=
 <krzysztof.szlesinski@naprzod.pl>
From: =?UTF-8?Q?Krzysztof_Szlesi=c5=84ski?= <krzysztof.szlesinski@naprzod.pl>
Message-ID: <949a86fa-9f9c-6fd7-bec8-1001ccf3fa13@naprzod.pl>
Date: Mon, 30 Nov 2020 19:40:20 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.5.0
MIME-Version: 1.0
Content-Type: multipart/mixed;
 boundary="------------8176FA1EA81F6F6C4F3BE639"
Content-Language: pl

This is a multi-part message in MIME format.
--------------8176FA1EA81F6F6C4F3BE639
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit



--------------8176FA1EA81F6F6C4F3BE639
Content-Type: text/plain; charset=UTF-8;
 name="=?UTF-8?B?xYLFgsWCxYLFgsWCxYIudHh0?="
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
 filename*=UTF-8''%C5%82%C5%82%C5%82%C5%82%C5%82%C5%82%C5%82%2E%74%78%74
to TB: (from Outlook)
Return-Path: <krzysztof.szlesinski@naprzod.pl>
X-Original-To: krzysztof.szlesinski@naprzod.pl
Delivered-To: krzysztof.szlesinski@naprzod.pl
Received: from localhost (localhost [127.0.0.1])
	by poczta.naprzod.pl (Postfix) with ESMTP id 34E0D29E0086
	for <krzysztof.szlesinski@naprzod.pl>; Mon, 30 Nov 2020 19:43:11 +0100 (CET)
Authentication-Results: poczta.naprzod.pl (amavisd-new);
	dkim=pass (1024-bit key) reason="pass (just generated, assumed good)"
	header.d=naprzod.pl
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=naprzod.pl; h=
	content-type:content-type:message-id:subject:subject:from:from
	:date:date:mime-version; s=default; t=1606761790; x=1608576191;
	 bh=G9O0t5TeUjs+dzndUMJKY8+2CYqbTyVT57GuzkwLfi4=; b=dgr0RxgKsH4c
	YYRwxUOdPKbLmRaKewnldOsK1dvPSK+WAT9ZjRkjC7NaK1rIKCTpnKB0c5HDdwoK
	Wo3Gw+Ja9AiC5X3rTgzTFThHvUHoX2Or9/YQsf1QzWmyk40HzEqRlZJxn3fh6Wxr
	6ysVJRob5biuAGZpokXia68qtHIJxUo=
X-Virus-Scanned: Debian amavisd-new at poczta.naprzod.pl
Received: from poczta.naprzod.pl ([127.0.0.1])
	by localhost (poczta.naprzod.pl [127.0.0.1]) (amavisd-new, port 10026)
	with ESMTP id ks4BU4paoV-T for <krzysztof.szlesinski@naprzod.pl>;
	Mon, 30 Nov 2020 19:43:10 +0100 (CET)
Received: from smtp.naprzod.pl (apn-31-0-40-242.dynamic.gprs.plus.pl [31.0.40.242])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	(Authenticated sender: krzysztof.szlesinski@naprzod.pl)
	by poczta.naprzod.pl (Postfix) with ESMTPSA id 87C3529E007F
	for <krzysztof.szlesinski@naprzod.pl>; Mon, 30 Nov 2020 19:43:08 +0100 (CET)
MIME-Version: 1.0
Date: Mon, 30 Nov 2020 19:43:04 +0100
From: <krzysztof.szlesinski@naprzod.pl>
Subject:
Message-ID: <7776A7FA-F697-9149-B3D7-725E07257197@hxcore.ol>
To: Microsoft Outlook <krzysztof.szlesinski@naprzod.pl>
Content-Type: multipart/mixed;
	boundary="_6F388283-900F-3E4E-9EAA-FD8301135B29_"

--_6F388283-900F-3E4E-9EAA-FD8301135B29_
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="utf-8"

<html><body><div style=3D"color: rgb(33, 33, 33); background-color: rgb(255=
, 255, 255);"><br></div><div id=3D"ms-outlook-mobile-signature"><div><br></=
div>Pobierz aplikacj=C4=99 <a href=3D"https://aka.ms/ghei36">Outlook dla sy=
stemu Android</a></div></body></html>=

--_6F388283-900F-3E4E-9EAA-FD8301135B29_
Content-Type: application/pdf;
	name="=?utf-8?Q?=C5=82=C5=82=C5=82=C5=82=C5=82.pdf?="
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
	filename="=?utf-8?Q?=C5=82=C5=82=C5=82=C5=82=C5=82.pdf?="