Yes, all mail coming into No-IP.com‘s network is scanned for viruses. We also have block lists available that can be applied to email coming in for your domain.
By default, spamhaus.org, barracuda, spamcop, rfc-ignorant.org, and NJABL are used as well as greylisting. For POP3 Email, spam tagging is also applied. No-IP.com is continually tweaking and adding to their email tools to give you the best possible protection against spam and viruses.