Sending "Prohibited" Attachments
Many mail servers, including SEAS and Gmail, block dangerous attachments. New viruses will slip past anti-virus software, and some mail readers are at risk even if the user does not choose to open the attachment, so these attachments are very dangerous.
The following file types are automatically blocked by our spam filter:
lnk, asd, hlp, ocx, reg, bat, chm, com, cmd, cpl, exe, dll, vxd,
pif, scr, hta, jse, shm, shb, shs, vbe, vbs, vbx, wsf, wsh, wmf
If someone sends you an email with a prohibited attachment, the email will be quarantined, and you will be sent an email with information about the blocked message and contact info if you'd like to have the email unblocked. The email will automatically be deleted after two weeks.
The system will also examine attachments to determine their type, so changing the extension won't necessarily get a file through the filter. Some operating systems don't use filename extensions, but their executables will still be blocked.