The Emeryville, California-based company has until now concentrated on software, but in recent years there has been a market trend towards appliances. CipherTrust and IronMail blazed the trail, and other software-only players in email security such as Clearswift have also unveiled appliance offerings.

Sendmail said the Sentrion 1- and 2U appliances will be rolled out in the US from October 6, and in EMEA shortly thereafter. It said the MTA contained within the products is the open-source version, enabling it to reduce the overall cost as a result. It also said the appliances include MailStream Manager policy management technology, which enables integration into corporate directories for things like decisions whether to encrypt a particular message.

The boxes ship with the MTA, policy management, and session control as default, with McAfee AV and anti-spam from Cloudmark and/or German ISV Eleven as licensed extras charged on a per-user, per-year basis. The boxes can also work with other AV and AS engines as required, said John Ore, director of product marketing.

Thorgeir Einarsson, managing director of Sendmail for EMEA, said while multiple technologies could be expected to impact throughput, we find that by carrying out a directory look-up on sender and recipient, we reduce the volume of traffic to be scanned by 50%.

The company will soon release list prices for the two appliances in the range.