[Exim] Email Error Message

Can Exim send out the message "User mailbox exceeds allowed size"? I have
checked all docs, ran grep on all files in the source, and can not find
anything that will reply with this error.

I have a key person who can not get email from a business associate, and the
associate is getting back this message. I find nothing in my logs
indicating that we rejected any email from this person, nor can I seem to
get the business associate to send me a COMPLETE copy of the returned email
he got so I can track down where it actually came from.

So, I just need to know, is it even possible for Exim to send this error
message back. (For further clarification, I have included the entire
message that the business associate sent me for diagnosis purposes). I
guess what I am after is either someone telling me that Exim can do this to
I can keep looking, or someone telling me that it isn't possible so I can
send the error back to the business associate's email provider.

Thanks in advance for your help.

Terry Shows
Computer Software Specialists LLC
terry.shows@??? <mailto:terry.shows@csstn.com>


========== Message from business associate ==================

----- Original Message -----
From: "Postmaster" <postmaster@???>
To: <info@???>
Sent: Wednesday, January 07, 2004 9:41 AM
Subject: Undeliverable Mail


> User mailbox exceeds allowed size: key-person@???

       {{Note the addition of mail. to the domain for the email address.
This was NOT on the original email, but mail.mydomain.com IS my email
server's name}}

>
>
> Original message follows.
(and then the original message that associate sent follows here. Clipped
out, contains no clues)