A number of lists at various LISTSERV sites had this same problem.  I
went to an AOL web site (a prviously discussed LSTOWN-L item) looking at
how to diagnose.  That did not help [me].

It wasn't clear if the one of the LISTSERV distribute backbone site's was
(or wasn't) being blocked.

The problem was intermittant for two days ... none recently.

/Pete

At 20:35 01/14/2004 Wednesday, Adam Hartfield wrote:
 >> Yesterday I thought it was a freak mistake but today I found myself and my
 >> co-listowner on the Daily error monitoring report  from
 >> [log in to unmask] because our mailboxes are "not found."
 >
 >[snip]
 >
 >> > 2 01/13 01/13 Lynne Farrow <[log in to unmask]>
 >> >         Last error: 5.1.1 550 MAILBOX NOT FOUND
 >
 >I got this error too on Words-L from my AOL subscribers. One error yesterday
 >for each of them, 3 or 4 errors each today. Now, Words-L so far has had
 >about 200 posts today, so it's not like every message is not making it to
 >the members. Very strange.