Hi, The documentation for 'Expires Default' which specifies default settings for Expires header generation, is as follows Syntax: A|Mseconds After base time(A|M) plus specified seconds, it will expire. Base time "A" means the client's access time and "M" means the file's last modified time. Can you please provide an example? Thanks, Gokul. ps: In general, your documentation would be a lot more useful (..and reduce postings like this ) if you had examples.