XWALLFilter is a no-brainer if you own XWall. The combined solution of XWall and XWALLFilter is the best value for a spam-filtering solution and rivals the best for filtering performance. XWALLFilter support is also top-notch, incomparable to the support most companies provide. -- JJ Brantingham, IT Director Sebesta Blomberg
XWALLFilter bundle protects your users against spam and malware with UNLIMITED user licensing and no monthly per-user fees
Microsoft suggests in the above article that customers use their EOP cloud service with monthly per-user fees to protect against spam for your onsite Exchange and Outlook users. Our XWall/XWALLFilter Bundle solution protects your Exchange and Outlook users against spam and malware and includes UNLIMITED users with no monthly per-user license fees.