Paravel Solutions automatically filters (blocks) certain file types if included as an e-mail attachment. The reason is to protect the end user. Workaround? First "zip" the file(s) you wish to attach as an e-mail attachment.
Here is a list of the files that are blocked:
(?:ad[ep] # list of extns # |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]) |