[imp] email attachment size problem

[You, Hongtao Howard]

Hi, I need some help on horde / imp configuration. 

 

Environment:

I have a RedHat Linux 9.0 box, with Apache 2.0.40-21.9, PHP 4.2.2-17.2,
horde 2.2.3-1, imp 3.2.1-1, turba 1.2-1, PEAR 1.3 from horde, etc.

 

I configure php.conf under /etc/httpd/conf.d, and setup requestbodysize
(something like that) directive from 524288 (512K) to 16777216 (16M).

 

I configure php.ini under /etc/, and setup the following directives:

. upload_max_filesize = 16M

. memory_limit = 8M

. max_execution = 180

. post_max_size = 16M

 

I setup MySQL database using the scripts from the packages with changes of
the database user's password.

 

I configure horde, imp, turba with correct server / data source / database
setting

 

Problem:

I can receive / send email with small attachment, like < 1M.

When I compose an email, I can browse the files and attach a big file (7MB)
to the email. I check /tmp, and find the temporary file. But when I try to
send the email, the email composing popup window gets cleared, and no email
is sent out.

 

I tried with squirrelmail that comes with RedHat 9.0. I can send email with
two 7MB files attachment.

 

I guess that I have some configuration wrong. Your help is very much
appreciated.

 

Thanks,

 

Howard