[SM-DEVEL] attachment problem with 1.4.11

[Euroka <bat...@gm...>]

Hi all,

Since upgrading to 1.4.11 some users are reporting problems with
attachments.

In some networks it's not possible to send an attachment, with FF2 or IE6.
Users can browse and select an attachment and send the message but when they
look in the 'Sent' folder the message has no attachment. BUT when trying
this from another network/isp it works flawlessly?? Also on the network
where the problems occur (corporate AD) it's possible sto use attachments
with services like yahoo or gmail.

I copied the config.php from my 1.4.10a setup to the 1.4.11 /config folder
and I'm using RHEL4 with:

* dovecot-0.99.11-8
* postfix-2.2.10-1.1
* httpd-2.0.52-32.3
* php-4.3.9-3.22.5

Any idea how I can solve this problem?