F19 boot hangs on sendmail

[Beartooth]

I'm running F19 on a T30 thinkpad, upgraded iirc by means of 
fedup from F18 (which ran fine).

Boot messages seem fairly normal (apart from being faint and red-
shifted), until they reach sendmail. I get "Started ....Agent" followed 
(on the same line, not a new line) by "Starting ....Client ..."

I can ssh in from another machine on my LAN.

[Tom Horsley]

Every time I've seen sendmail hang it was because localhost
wasn't properly defined in /etc/hosts (127.0.0.1).

[Beartooth]

On Thu, 03 Oct 2013 13:03:52 -0400, Tom Horsley wrote:
> Every time I've seen sendmail hang it was because localhost wasn't
> properly defined in /etc/hosts (127.0.0.1).

Hmmm.... Contrary to my post, that machine is not accepting ssh; 
I get a note saying "no route to host."  Having upgraded with fedup, I 
have no medium that I could boot to rescue. Maybe Knoppix, or one of its 
ilk, will let me do something....

Later -- very weird : with a Knoppix 7.0 CD in the drive, the 
machine told to boot that, it promptly booted to Fedora!

I edited /etc/hosts to look like the one on my #1 PC, rebooted, 
and got the Knoppix CD out of the drive. It duly booted, by way of Grub 
or Grub2, to a login screen, which let me log in.

Many, many thanks!!