Ready Set Go!The Ready-Set-Go! server blocks incoming emails that include .eml attachments, as well as other potentially virus-laden file types.
Rationale: Viruses are commonly propagated across the internet through email attachments. Therefore, many ISPs and email servers block email attachment types that are easily used for such devious purposes.
In some email clients, such as Microsoft Outlook, .eml files can trigger active scripting that can be used to launch virus activity. Furthermore, other executable file types can be wrapped in .eml files in order to bypass other virus checking scans. Therefore, many ISPs and email servers block the .eml file type.
There are two ways that email clients typically use to forward emails: As an Attachment or Inline.
Forwarding an email as an attachment, means that your email will create an .eml file out of the source email and attach that .eml file to your outgoing email. Some webmail programs have a hard time reading such attachments. And some ISPs and servers block such attachments.
Forwarding an email inline means that the text of the source email is copied into the body of your outgoing email. This provides an opportunity to quote only a portion of the content or edit the content as needed.
Some email clients default to forwarding emails as attachments -- though this is becoming less common. Here are some instructions for some common email clients, to forward inline (instead of as an attachment).