Found it. Fixed in CVS and IMP 4.0.3.

This is actually an error from the c-client library, that shouldn't be 
displayed because we catch all imap errors on script shutdown (the 
last line in imp/lib/base.php).



Try putting



imap_errors();



before the



exit;



lines in imp/view.php, and see if that fixes your problem.

I should add we are using Cyrus IMAP as our mail server.

When I'm at or above 90% of my email quota, the HTML for the quota 
warning is being tacked onto messages under the following circumstances:



1)  View "Message Source"  - it shows up at the end of the message

2)  "Save As" - opening the message in a text editor shows it at the 
end of the message

3)  Downloading certain attachments (particularly CSV) - the warning 
is attached to the end of the text message



The first two are not a big deal, as it mainly a cosmetic thing.  The 
latter is a big problem, because data in the MIME part of the message 
is being altered when the attachment is downloaded.



The HTML snippet is something like this:



<br />

<b>Notice</b>:  (null)(): [ALERT] Mailbox is at 90% of quota in 
<b>Unknown</b> on line <b>0</b><br />



I'm attaching a simple CSV attachment I sent myself, for an example.