On 2/23/2011 08:49, k p wrote:
> At the most basic level it means a message which appeared to be from, or related to, your list, was
> rejected by the mail server for the destination domain.

Or "a" mail server.

In the case of this mail address, there are two MX mail servers (both in .SE).

One (the secondary) might have problems that the first (primary) does not.

/Pete