RE: Fetchmail errors

["Daniel L. Miller" <dmiller@amfes.com>]

> Those messages are retrieved by fetchmail and passed to your MTA.
While
> processing the message, your MTA finds a syntax error in the headers,
> and passes fetchmail an error code.  The MTA does not forward on the
> message.  fetchmail sees the error and as the message was not
> successfully delivered, it does not delete the message from the POP3
> server.

So does this mean it's related more to my MTA (exim) than fetchmail?
What can I check in exim to solve this problem?

I've connected directly to my pop3 server with a pop3 client to remove
any messages - I'm still getting the errors.

Daniel