On Fri 17 Aug 2018 at 15:00:09 -0400, Stephen P. Molnar wrote: > I have just installed Stretch on a new SSD on my platform. > > During the installation I selected the University of Chicago mirror and > accepted the defaults plus backports. > > When I fun apt-get install Thunderbird apt-get tries to log on to > prod.debian.map.fastly.net (2a04:4E42:2c::2040 and hangs. I can't find that > address anywhere in /etc/apt. Why am I getting this behavior? Even more > important, how do I get rid of the problem? > > It is critical as my wife uses Thunderbird for her email. > > Any assistance will be greatly appreciated.
Post your /etc/apt/sources.list -- Brian.