Hi,

My Current Version:
Win10 22h2 64bit
Pegasus Mail v.4.8.1028
EIRenderer 2.7.1.0
-
Here is part of content source something like this :

--_000_5c0a2682083b479a896d010ee8fdf990shkpcom_
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: base64

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 dCByZWdhc
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--_000_5c0a2682083b479a896d010ee8fdf990shkpcom_--

This will not display content.
I don't know why, could you fix this issue?
Thanks

Regards,
Buyer

See my reply in the previous thread for what to do in such cases. Depending on how sensitive your message is you may also decode it on web pages providing online BASE64 decoding services and open the resulting HTML in your browser. If it doesn't decode there it won't decode anywhere else either, though ...

Hi Michael,

I already sent the email to <beta-reports [at] pmail.gen.nz>,
please check, thanks

Regards,
Buyer

I'm sorry, this is what IER gets from Pegasus Mail after BASE64 decoding:

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<meta name="Generator" content="Microsoft Word 15 (filtered medium)">

<style><!--
/ Font Definitions /
@font-face
{font-family:新細明體;
panose-1:2 2 5 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@新細明體";
panose-1:2 1 6 1 0 1 1 1 1 1;}
/* Style Defio��ѥ��̀��4)��5ͽ9�ɵ�������5ͽ9�ɵ������ع5ͽ9�ɵ��4(%��ɝ�������4(%��ɝ������ѽ���������4(%���еͥ���ȸ����4(%���е�������
����ɤ��ͅ�̵͕ɥ���4)�鱥���������5ͽ!���ɱ���4(%�ͼ���屔��ɥ�ɥ������4(%������������4(%ѕ�е����Ʌѥ���չ��ɱ�����4)��٥ͥѕ��������5ͽ!���ɱ�������ݕ�4(%�ͼ���屔��ɥ�ɥ������4(%������������4(%ѕ�е����Ʌѥ���չ��ɱ�����4)���ͽ��ɵ���������ͽ��ɵ�������ع�ͽ��ɵ���4(%�ͼ���屔������ͽ��ɵ���4(%�ͼ���ɝ���ѽ�������Ѽ�4(%��ɝ���ɥ��������4(%�ͼ���ɝ������ѽ�������Ѽ�4(%��ɝ������������4(%���еͥ���ȸ����4(%���е�������Q���́9�܁I������͕ɥ���4)���������M�屔��4(%�ͼ���屔���������ͽ���������͔�4(%���е�������
����ɤ��ͅ�̵͕ɥ��4(%������ݥ����ѕ����4(�5ͽ
�����ձ�4(%�ͼ���屔����������е������Р�f��B�6��S��C�Р�f��B�f֖Ǔ�$6Ɩ'&�"�6�2�6W&�c��Т�vRFVf��F���2��ФvRv�&E6V7F���Р��6��S�c"�Bs�"�C�Р��&v��s"�B��Bs"�B��C��ЦF�b�v�&E6V7F���Р��vS�v�&E6V7F�����Т�����7G��S���ն�bwFR�6����dž���У��6�VFVfV�G2c�W�C�&VF�B"7�F���##b"��У��������V�F�e������ն�bwFR�6����dž���У��6�V���WBc�W�C�&VF�B#�У��F�c�W�C�&VF�B"FF�#"��У���6�V���WC���������V�F�e����У���VC�У�&�G���s�%���Er"Ɩ��"3Sc43"fƖ��"3�SDcs""7G��S�'FW�B֧W7F�g��G&�ӧV�7GVF���#�У�F�b6�73�%v�&E6V7F���#�У�6�73�$�6���&��#��#��7���s�$T��U2"7G��S�&f��B�6��S�B�C�f��B�f֖Ǔ�gV�C�F��W2�Wr&���gV�C��6W&�c�6���#�&�6�#�FV"�����7����#��#��7���s�$T��U2"7G��S�&f��B�7�^�N�M�ٛ۝Y�[Z[N��][��[Y\��]���X[��][���\�Y����܎��X�ȏ�Μ��Μ���[��؏���B��\��H�\�ӛܛX[�����[�[��H�S�UTȈ�[OH��۝\�^�N�M�ٛ۝Y�[Z[N��][��[Y\��]���X[��][���\�Y����܎��X�ȏ�Μ�������Μ���[��؏���B��\��H�\�ӛܛX[�����[�[��H�S�UTȈ�[OH��۝\�^�N�M�ٛ۝Y�[Z[N��][��[Y\��]���X[��][���\�Y����܎��X�ȏ�[����Y\�]�]�܈[�\�[��ܛX][ۋ[��ߏΜ��Μ���[��؏���B��\��H�\�ӛܛX[�����[�[��H�S�UTȈ�[OH��۝\�^�N�M�ٛ۝Y�[Z[N��][��[Y\��]���X[��][���\�Y����܎��X�ȏ�Μ�������Μ���[��؏���B��\��H�\�ӛܛX[�����[�[��H�S�UTȈ�[OH��۝\�^�N�M�ٛ۝Y�[Z[N��][��[Y\��]���X[��][���\�Y����܎��X�ȏ��\�t regards,<o:p></o:p></span></b></p>

<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Whitney Tsang<o:p></o:p></span></b></p>

<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Site Clerk for Tin Wing Stop<o:p></o:p></span></b></p>

<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Tel : 3611 3518<o:p></o:p></span></b></p>

<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>

<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
<br>

<hr>
Disclaimer: This e-mail message#�ѽ��ѡ�ȁݥѠ���䁅�х������̤��́��������ѥ���Ѽ�ѡ�����ɕ�͕��������䁅�ͼ�����ɥ٥�������%���ԁ�ɔ���Ёѡ����ѕ�����ɕ������а��ԁ�ɔ���ɕ�䁹�ѥ�����ѡ�Ё��䁑��͕����ѥ��������ɥ��ѥ����ȁ���她�����ѡ�́���ͅ����́��ɥ�ѱ�4(��ɽ����ѕ���A���͔���ͼ���ѥ��ѡ��͕���ȁ�������ѕ�䁉�ɕ��ɸ����������������є��Ё�ɽ����ȁ���ѕ���%�ѕɹ�Ё����չ���ѥ��́�����Ё����ՅɅ�ѕ���Ѽ����͕��ɔ��ȁ��ɽȵ�ɕ���Q���͕���ȁ����ѡ����ѥ��ѡɽ՝��ݡ����ѡ�́���ͅ����͕́�Ёѡ�ɕ��ɔ������Ё������4(���������䁙�ȁ��ɽ�́�ȁ����ͥ��́�́���х��������ѡ�����ͅ������������ɕ���������٥��͕́�́��ɕ�ձЁ���%�ѕɹ�Ё�Ʌ�͵��ͥ�����䁽������́���х��������ѡ�́���ͅ����ɔ�ѡ�͔����ѡ��͕���ȁ���ͽ����䁅���ݽձ����Ё�������䁕�ѥ��չ���́�ѡ��ݥ͔��6�V&ǐТ7FFVB�Bv�F�F�RWF��&�G��bF�R6V�FW"GVǒfW&�f�VB�УƇ#�У��&�G��У���F����

IOW: Garbage. You shouldn't expect me to work around this especially since the message contains a plain text part providing all information you need. BTW: Isn't this spam anyway? And didn't you get IER's error message offering to take a look at the source? If so you should have seen the above in your plain text editor of choice already, I'm not getting more than that from the debugger ... Looks to me like failed conversion of an Asian charset to UTF-8.

In case others haven't ever seen such an error page here it is so everyone may understand what I'm talking about:

This shows up instead of the missing message body and clicking the links will immediately take you where they are supposed to take you.

Tried linux base64 -d but it reported invalid input,
But tried https://www.base64decode.org/ and got this?

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:新細明體;
panose-1:2 2 5 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@新細明體";
panose-1:2 1 6 1 0 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.EmailStyle18
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
font-family:"Calibri",sans-serif;}
/* Page Definitions */
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="ZH-TW" link="#0563C1" vlink="#954F72" style="text-justify-trim:punctuation">
<div class="WordSection1">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Dear all,</span></b><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Enclosed herewith for your information, thanks~<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Best regards,<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Whitney Tsang<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Site Clerk for Tin Wing Stop<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:14.0pt;font-family:"Times New Roman",serif;color:black">Tel : 3611 3518<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
<br>
<hr>
Disclaimer: This e-mail message (together with any attachments) is confidential to the addressee and may also be privileged. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message is strictly
prohibited. Please also notify the sender immediately by return e-mail and delete it from your system. Internet communications cannot be guaranteed to be secure or error-free. The sender and the entity through which this message is sent therefore do not accept
liability for errors or omissions as contained in the message and any spreading of viruses as a result of Internet transmission. Any opinions contained in this message are those of the sender personally and would not bind any entity unless otherwise clearly
stated and with the authority of the sender duly verified.
<hr>
</body>
</html>

Taking the decoded code, I was able to encode it using regular base64 to get this.
Then compared the strings. It matched the first 4 lines, but then line 5
differed.

VFIvUkVDLWh0bWw0MCI+CjxoZW
VFIvUkVDLWh0bWw0MCI+DQo8a

Have no clue why?
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ZWRlZmF1bHRzIHY6ZXh0PSJlZGl0IiBzcGlkbWF4PSIxMDI2IiAvPgo8L3htbD48IVtlbmRpZl0t
LT48IS0tW2lmIGd0ZSBtc28gOV0+PHhtbD4KPG86c2hhcGVsYXlvdXQgdjpleHQ9ImVkaXQiPgo8
bzppZG1hcCB2OmV4dD0iZWRpdCIgZGF0YT0iMSIgLz4KPC9vOnNoYXBlbGF5b3V0PjwveG1sPjwh
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az0iIzk1NEY3MiIgc3R5bGU9InRleHQtanVzdGlmeS10cmltOnB1bmN0dWF0aW9uIj4KPGRpdiBj
bGFzcz0iV29yZFNlY3Rpb24xIj4KPHAgY2xhc3M9Ik1zb05vcm1hbCI+PGI+PHNwYW4gbGFuZz0i
RU4tVVMiIHN0eWxlPSJmb250LXNpemU6MTQuMHB0O2ZvbnQtZmFtaWx5OiJUaW1lcyBOZXcgUm9t
YW4iLHNlcmlmO2NvbG9yOmJsYWNrIj5EZWFyIGFsbCw8L3NwYW4+PC9iPjxiPjxzcGFuIGxhbmc9
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PiA8L286cD48L3NwYW4+PC9iPjwvcD4KPHAgY2xhc3M9Ik1zb05vcm1hbCI+PGI+PHNwYW4gbGFu
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Um9tYW4iLHNlcmlmO2NvbG9yOmJsYWNrIj5FbmNsb3NlZCBoZXJld2l0aCBmb3IgeW91ciBpbmZv
cm1hdGlvbiwgdGhhbmtzfjxvOnA+PC9vOnA+PC9zcGFuPjwvYj48L3A+CjxwIGNsYXNzPSJNc29O
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PC9zcGFuPjwvYj48L3A+CjxwIGNsYXNzPSJNc29Ob3JtYWwiPjxiPjxzcGFuIGxhbmc9IkVOLVVT
IiBzdHlsZT0iZm9udC1zaXplOjE0LjBwdDtmb250LWZhbWlseToiVGltZXMgTmV3IFJvbWFuIixz
ZXJpZjtjb2xvcjpibGFjayI+QmVzdCByZWdhcmRzLDxvOnA+PC9vOnA+PC9zcGFuPjwvYj48L3A+
CjxwIGNsYXNzPSJNc29Ob3JtYWwiPjxiPjxzcGFuIGxhbmc9IkVOLVVTIiBzdHlsZT0iZm9udC1z
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b3JtYWwiPjxiPjxzcGFuIGxhbmc9IkVOLVVTIiBzdHlsZT0iZm9udC1zaXplOjE0LjBwdDtmb250
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ZHk+CjwvaHRtbD4K

Well, interesting results, but not helpful for me since the BASE64 decoding is done by Pegasus Mail before it's handed over to IER, so even if there would be another way of decoding (most likely a charset issue) I couldn't apply it with IER because the damage is already done. The �s are representing characters which cannot be displayed using my text editor's current font while using a hex editor starts displaying the "/* Style Defio��ѥ��̀��4)" part above with "/* Style Defioù¥Ñ¥½¹Ì€¨¼".

And with regard to charsets: Both the MIME headers of the HTML message part and the meta element of the HTML itself say it's UTF-8, so this wouldn't make a difference either. IER is prepared to assume so called "Western" charsets if the announced ones fail since this is the most frequent error in HTML sources, but I have no idea what to assume in this case ...

Hi all,

here is my result that I tried and "IER" have return to good result:
I just remove this "!" charset and "IER" can read and return good HTML result.

Remark:
I use VIM editor and use this command %s/!$//g for removing "!" charset then open email by PMail and return to normal...

I hope this will give you some idea to solve this issues.

Regards,
Buyer

Even the linux base64 and even openssl base64 would not support the original decoding.
Both give invalid input. Only the web page to decode worked?
The used it to encode, and the decode even failed with that.
Only when I used base64 to encode it did I get results that could be decoded by the regular base64 decoder.

At least there is a way to way to copy the raw base64 code to the web page to have it decoded.

All it shows in browser is this with disclaimer removed.

Dear all,
Enclosed herewith for your information, thanks~
Best regards,
Whitney Tsang
Site Clerk for Tin Wing Stop
Tel : 3611 3518

So, not sure what did the original encoding, or why regular base64 sees it as invalid input? Probable something with UTF8 Chinese?? characters.

Just wanted to figure it out, without knowing how it was coded, don't know how Pegasus could handle it, and since even regular base64 doesn't handle it.

Interesting...

Hi all,

For original source content:
I also success to decode by using base64 with -i option(linux system). "-i" meaning is When decoding, ignore non-alphabet characters, here is what I used:
base64 -d -i [file]

I hope this also give you some idea to solve this issue.

Regards,
Buyer

Tried this command and regular base64 was able to decode code with no problem..
tr -d '!' <weirdbase64 | base64 -d

Used tr command to delete the '!' from the code I had copied to the filename name, and then passed output to base64 -d to decode.

So question is why was the ! character in the encoded version??

OK, here's what the respective RFC 4648 says about so called Non-Alphabet Characters in Encoded Data (the ASCII alphanumeric characters, "+", "/" and "=" for padding, for the base alphabet see here ) :

Implementations MUST reject the encoded data if it contains
characters outside the base alphabet when interpreting base-encoded
data, unless the specification referring to this document explicitly
states otherwise. Such specifications may instead state, as MIME
does, that characters outside the base encoding alphabet should
simply be ignored when interpreting data ( "be liberal in what you
accept" ).

With Email we actually have the MIME case at hand, so - as in this message - a decoder should ignore line breaks, blank spaces and exclamation marks which all aren't part of the base alphabet as referred to above. More to come ...

This is indeed the question here, especially since there's nothing mentioned anywhere that would require this to be done: The CRLF line breaks are there as usual and don't need any extra care AFAIK.

I'm now going to ask David Harris about his opinion regarding this issue referencing the RFC.