On Sat, 11 Mar 2006 23:39:07 +0200, Yizhar Hurwitz
<yizhar@mail.dot.com> wrote:

>Gerard Bok wrote:
>>
>> The aim is to use Outlook 2003.
>> Couldn't get that operational at all, so for the time being, we
>> settled for Outlook Express instead.
>>
>> Synchronize accounts produces loads of 0x800CCC0F errors.

>If disabling Windows XP Firewall solves the problem, then you can/should:
>
>Disable it if not needed - anyway you should normally use a network perimeter firewall.

It's not just Windows' firewall, but any personal firewall.
There is a perimeter firewall (Smoothwall) but I wouldn't like
the PC's to run without protection of their own.

>Or re investigate the exceptions you try to use.
>You can try exceptions by application exe file name (Add Program), instead of tcp port.
>Please note that exception by port number at the client side is irrelevant because such exceptions are intended for server side
>applications.

You're quite right there. I feel ashamed, as I should have
realized that before I opened port 143.

>Another suggestion - you have mentioned that you are running "Courier imap" server which uses Maildir format.
>Therefor, another possible troubleshooting step might be:
>install a different imap server that supports Maildir format, and test how it performs.

I cannot run another mailserver on that domain as it is hosted by
a third party.
I am currently testing on another domain though, but it appears
to run the same type of Courier mailserver. (Squirrel is just the
webmail frontend, didn't know that :-)

>Another thing to test is your firewall - it might be related to the problems that packets come out of order and this might
>indicate a lower layer (OSI layer 2-4) related problem .

I just connected a PC in front of the firewall. With it's own
firewall also switched off, it still produces errors. Even on a
quiet sunday afternoon. (Server load seems to aggregate the
problems.)

>One way to rule this out is simply to use a different firewall from the many options out there.
>Again - you can implement a parallel firewall beside the "real" one, and configure a specific PC to use the testing firewall as
>default gateway, without affecting the rest of the network.
>
>What do you think?

That you provided me with a lot of new tasks :-)
But I appreciate your input. Anything to get the client happy :-)

--
Kind regards,
Gerard Bok