Cant receive mails with .eml attachement through proxmox

[JoshuaSign]

Hi,

I just test Proxmox Mail Gateway 6.0-4 and i cant understand why i cant receive .eml attachments from outside.

I do many tries with different gw and everytime a mail comes by the proxmox gw, the file.eml attachement is deleted.

I try to disable every rules, but same problem.
I investigate were it can be done in the postfix or spamassassin, but did'nt found it :-(.

Can you please give me a way ?


Regards.
Joshua

 

[JoshuaSign]

Hi,

After many hours and hundreds tests, i finaly find why the eml attachment disapear.
I explain below.

The filter process /usr/bin/pmg-smtp-filter call functions from /usr/share/perl5/PMG
I found that HTMLMail.pm, MailQueue.pm and Unpack.pm deal with MIME types using : /usr/share/perl5/MIME/Parser.pm
Take a look around line 1046 of this file.

The default in /usr/share/perl5/MIME/Parser.pm is extract_nested_messages to 1.
And only HTMLMail.pm set extract_nested_messages to 0
MailQueue.pm and Unpack.pm explicitly set to 1.

If you want to be able to receive eml attachements, just change :

"MailQueue.pm" at line 350 :
$parser->extract_nested_messages (1);
by
$parser->extract_nested_messages (0);

"Unpack.pm" at line 541 :
$parser->extract_nested_messages (1);
by
$parser->extract_nested_messages (0);

Later, if you prefer avoid eml files attachement, be sure to put these 3 types in the "Dangerous Files" list :
Content-Type: message/rfc822;
Content-Type: message/external-body
Content-Type: message/partial;

I hope this will help.

JoshuaSign_

 

[Stoiko Ivanov]

sending .eml attachments works here (without the modifications).
Could you please post the (anonymized) logs of such a mail without the modifications?
and maybe also the whole mail including the .eml attachment (again anonymized)

thanks!