Trying to prevent large file attachments in Squirrelmail, on U8.10S.

Chris Mohler cr33dog at
Tue Dec 23 21:47:42 UTC 2008

On Wed, Dec 24, 2008 at 3:46 PM, Chris Mohler <cr33dog at> wrote:
> On Wed, Dec 24, 2008 at 3:33 PM, Xn Nooby <xnooby at> wrote:
>> Is it possible to prevent Squirrelmail users from uploading large
>> files to a server running Squirrelmail?  My testing seems to indicate
>> that the attachment size limits enforced by Squirrelmail take place
>> *after* the file has been uploaded - at which time Squirrelmail aborts
>> the entire message. I will have some remote users, and I do not want
>> them to be able to upload files that are over a limit (say 10MB).
>> If a remote user tries to attach a 500MB attachment to their email, I
>> don't want them to upload the entire 500MB file, only to then have SM
>> abort the message.  I want it to fail immediately, or after the 10MB
>> limit has been reached.
>> I though there was a way to do this in Apache or PHP, but have been
>> unable to find it.  I am running Ubuntu Server 8.10 with Apache,
>> Postfix, Dovecot, and Squirrelmail.
>> Any suggestions on how to get the file attaching process to abort
>> before it uploads the entire 500MB file?
> Check the "MAX POST SIZE" (similar to that anyway) setting in php.ini.
>  That will fail at the point that the limit is reached.  Of course,
> that's a site-wide setting though...

Oops - this is actually the correct option:
; Maximum allowed size for uploaded files.
upload_max_filesize = 2M


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