Hello, I just updated the php packages and restart the web server again... Create a test web page with "phpinfo()" function as the following result : post_max_size = 10M max_execution_time = 3600 ; Maximum execution time of each script, in seconds max_input_time = 3600 ; Maximum amount of time each script may spend parsing request data memory_limit = 512M ; Maximum amount of memory a script may consume file_uploads = On upload_max_filesize = 8M But For IMP Display result : 1, Maximum Attachment Size: 2,097,152 bytes ( only 2MB ??? ) 2, Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 1519127 bytes) in /home/itawm/html/horde/lib/Horde/MIME/Part.php on line 1027 ( limit 8MB ??? ) Mine is Linux FC6 System... Many thanks your help ! Edward.