In a recent notice to customers, Sophos has announced that their flagship gateway security product, PureMessage for Unix, will have data updates published every five minutes, four times more frequently than previously. The data updates will change to being incremental: instead of downloading the entire anti-spam data package for each update, only changes since the last update will be downloaded.
This change brings the anti-spam data currency into line with that of the anti-virus data, which moved to five minute updates in January 2006. These changes require no action on the part of PureMessage 5.x customers.