I would imagine that it is only your subscribers who have recently posted messages to your list that are receiving these? My guess is that the service provider for one of your subscribers (who has a full mailbox) is inappropriately addressing the error message to the senders of your list messages rather than to your list's admin server.

The solution would be first of all to figure out who the subscriber is, then to either delete the subscriber or set the subscriber to NOMAIL. But some detective work may be needed to figure out the subscriber - looks to me like service provider for the subscriber has modified the suscriber's actual email address.

Charles

On Sun, 5 Feb 2017 16:54:17 +0000, Ron Beatteay <[log in to unmask]> wrote:

>Hi all,
>  I'm getting this error message from my listserv software  ( below )
>I've contacted my server tech support about it and they're sayingthat there's not back up of email, and the posts are getting throughto the lists as usual,, but I and other list members are still gettingthese error messages generated by the software.  Any ideas?
>
>Ron   
>
>This message was created automatically by mail delivery software.
>A message that you sent has not yet been delivered to one or more of its
>recipients after more than 48 hours on the queue on vps.pixations.com.
>
>The message identifier is:    1cZK21-0002AR-77
>The date of the message is:    Thu, 2 Feb 2017 16:13:32 +0000 (UTC)
>The subject of the message is: Sunrise,,
>
>The address to which the message has not yet been delivered is:
>
>  [log in to unmask]   ( edited for privacy ) 
>    Delay reason: mailbox is full
>
>No action is required on your part. Delivery attempts will continue for
>some time, and this warning may be repeated at intervals if the message
>remains undelivered. Eventually the mail delivery software will give up,
>and when that happens, the message will be returned to you.
>

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