Error messages - what do they mean?

[Johan Almqvist]

Hi!

I'm getting stuff like this in my logs:

Nov 28 22:16:09 sol qmail: 975446169.345287 warning: trouble marking
remote/9/96701; message will be delivered twice! 
Nov 28 22:16:09 sol qmail: 975446169.347416 delivery 8796: deferral:
qmail-spawn_unable_to_create_pipe._(#4.3.0)/

This seems to mean trouble. What else does it mean?

-Johan
-- 
Johan Almqvist