Ensurehost configures our servers to scan all email for malicious software using ClamAV. This software currently detects over 60.000 viruses, worms and trojans and is used by major enterprises and Universities worldwide. We configure our servers to perform anti-virus definition updates hourly to ensure our servers are always protected.
Ensurehost also uses a couple of highly effective methods to prevent spam on our servers. The first is the use of Realtime Blackhole Lists (RBLs) for spam prevention. We configure our servers to use a hand-picked selection of RBLs which block known spam-hosts, open proxy servers, open mail relays, hijacked/infected servers and the like from sending mail to our server. The RBL selection was designed to eliminate spam without blocking legitimate mail. We also harden the mail server configuration as another layer in spam prevention