[Modus] error message

[Terry Trumbo]

I have a customer receiving the following error meassage when trying to email this one address. I seemed to remember somethig about this on the list before but I cannot remember what it was.   Terry   Your message has been delayed and is still awaiting delivery > to the following recipient(s): > > [EMAIL PROTECTED] > Message delayed > > > I/O error encountered > during command: MAIL FROM:<[EMAIL PROTECTED]> SIZE=4405 > >