File extensions that are not allowed as attachments

From a security perspective, host2cyber Mail Server would reject inbound mails containing attachments with any of the following file extensions:

.ade

.adp

.adt

.app

.asd

.asp

.asx

.bas

.bat

.bin

.btm

.cab

.cbl

.cbt

.cgi

.chm

.cil

.cla

.clas

.class

.cmd

.cpe

.cpl

.crt

.csc

.csh

.css

.cvp

.dll

.dot

.drv

.exe

.fon

.fxp

.hlp

.hta

.htr

.inf

.ini

.inp

.ins

.isp

.jar

.js

.jse

.keyreg

.ksh

.lib

.lnk

.mda

.mdb

.mde

.mdt

.mdw

.mht

.mhtm

.mhtml

.msc

.msi

.msp

.mst

.mp3

.nte

.nws

.obj

.ocx

.ops

.ov

.pcd

.pgm

.pif

.pl

.pm

.prg

.scr

.sct

.shb

.shs

.slb

.smm

.swf

.swt

.sys

.vbe

.vbs

.vbx

.vir

.vmx

.vxd

.wmd

.wms

.wmz

.wsc

.wsf

.wsh

.xms

.com