[exim] outlook chokes on large mails

Hi,
we having some issues downloading messages with outlook.
I know downloading is not part of an MTA, but the propblem is, exim is the
only thing I didn't try to replace in the chain yet. I tried pop3 as well as
imap, and with dovecot, tpop3d, courier.
All make outlook choke on a 3mb mail. It will never finish fetching it.
Is it possible that exim triggered an outlook bug somehow? Maybe any ideas how
to work around it?
The previous mailserver run postfix and the problem ocured when switching to
exim.


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best regards
Arvid Ephraim Picciani