What else does Proofpoint block?

Proofpoint blocks incoming e-mail greater than 50 MB in size and removes executable file attachments. The following file attachments are automatically removed: 386, 3gr, add, ade, app, asp, asx, bas, bat, chm, cmd, com, cpl, crt, css, dbx, dll, exe, fon, fxp, hlp, hta, inf, ins, isp, js, jse, lnk, mdb, mde, msc, msi, msp, mst, ocx, pcd, pif, reg, scr, sct, shs, shb, url, vb, vbe, vbs, vxd, wsc, wsf, wsh.