.eml attachments blocked

[wilburburns]

It appears as though SpamAssassin and Exim are blocking certain e-mail attachment.

Most specifically at this time, the file type being blocked are .eml . Cn this setting be changed or modified based on a specific account.

Additionally, Where can I find a list of all blocked Attachment File Types.

Currently, these File Types are being blocked incoming and outgoing.

Cliff

[cPanelDavidG]

It should be noted these files are blocked as they almost always contain malware. Typically, people will forward emails rather than attach an email as an attachment to an email, a very abnormal practice.

However, this can be changed. By default, the filter file is /etc/cpanel_exim_system_filter but you can verify if this is the case on your server by going to WHM -> Service Configuration -> Exim Configuration Editor and viewing the setting for "System Filter File."

In the default file, you will come across a line that looks like

if $header_content-type: matches "(?:file)?name=(\"[^\"]+\\\\.(?:ad[ep]|ba[st]|chm|cmd|com|cpl|crt|eml|exe|hlp|hta|in[fs]|isp|jse?|lnk|md[be]|ms[cipt]|pcd|pif|reg|scr|sct|shs|url|vb[se]|ws[fhc])\")"

Notice the eml in there? Properly removing it should allow .eml attachments through. However, realize that doing so is potentially a security risk to your users.

[wilburburns]

I completely Agree, Disabling this System Wide is quite dangerous. However, I would consider making this change for a single account if it was possible.

Thanks for the Quick Response

Cliff