I thought this might be germane to the discussion of ISPs that's been going on. It appears BellSouth.com is acting up again. They're not rejecting messages outright (yet?), but they're making it hard to deliver them. I can't tell, if they eventually get delivered, but the local mail software keeps coming back with errors such as this after every post. (I edited the addresses to protect the possibly guilty.)
> From: MAILER-DAEMON at erouter2.it-datacntr.louisville.edu (Mail > Delivery System) > Date: October 3, 2007 3:24:05 PM EDT > To: macgroup-bounces at erdos.math.louisville.edu > Subject: Warning: message has not yet been delivered > > > This is an automated message created by mail delivery software. > > Your message to: > xa at bellsouth.net > xb at bellsouth.net > xc at bellsouth.net > xd at bellsouth.net > xe at bellsouth.net > xf at bellsouth.net > xg at bellsouth.net > xh at bellsouth.net > xi at bellsouth.net > xj at bellsouth.net > xk at bellsouth.net > xl at bellsouth.net > xm at bellsouth.net > xn at bellsouth.net > xo at bellsouth.net > xp at bellsouth.net > xq at bellsouth.net > xr at bellsouth.net > xs at bellsouth.net > xt at bellsouth.net > has not yet been delivered because the recipient server did not > respond. > > This is just a warning, you do not need to take any action. We will > continue to attempt delivery of this message for 5 days.
