error message?

[Giovanni Rinaldi <g.rinaldi@mo.nettuno.it>]

Erik,
        yesterday I have sent a new message to your list, but I have received the following error message.
>
>   ----- The following addresses had delivery problems -----
><CLIN_NEUROPHYSIOL@LISTSERV.UMU.SE>  (unrecoverable error)
>
>   ----- Transcript of session follows -----
>lsv_amin: Unable to deliver mail to: CLIN_NEUROPHYSIOL
>lsv_amin: **Error(28)** A call to fopen() failed.
>554 <CLIN_NEUROPHYSIOL@LISTSERV.UMU.SE>... unknown mailer error 202

and I have had the same message after I send a request to the listserver.

>
>   ----- The following addresses had delivery problems -----
><listserv@LISTSERV.UMU.SE>  (unrecoverable error)
>
>   ----- Transcript of session follows -----
>lsv_amin: Unable to deliver mail to: listserv
>lsv_amin: **Error(28)** A call to fopen() failed.

   ----- The following addresses had delivery problems -----
<listserv@LISTSERV.UMU.SE>  (unrecoverable error)

   ----- Transcript of session follows -----
lsv_amin: Unable to deliver mail to: listserv
lsv_amin: **Error(28)** A call to fopen() failed.
554 <listserv@LISTSERV.UMU.SE>... unknown mailer error 202

What problems is there?
                                        Thanks
Giovanni Rinaldi, MD
Environmental Health
National Health Services
Regione Emilia Romagna
Italy

Phone: +39 51 283517 (pager)