On Thu, 20 Nov 2003, David Holland wrote:
  Looks to me like mx01.mail.bellsouth.net's smtp
server is
 overloaded/unreachable/down/etc.
 ><dogas(a)bellsouth.net>h.net>... Deferred: Bad file number
 >Reporting-MTA: dns; 
ms-smtp-02.tampabay.rr.com
 >Remote-MTA: DNS; 
mx01.mail.bellsouth.net 
yeah, the kernel (or the smtp server process itself) ran out
of usable file descriptors, so too many open files.  Which
probably means too many server-side SMTP sockets, meaning
someone DOS'd it.
(willingly or not ;-)
--f
--
Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
Visit the VAXlab Project at                     
http://www.pdp11.nl/VAXlab/
Visit the Archives at                                  
http://www.pdp11.nl/
Email: waltje(a)pdp11.nl         BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA