I finally made my amanda configuration work, The amcheck results are
fine, but when I run amdump for a test it sends to
/var/lib/amanda/dead.letter a error report:

>From amanda Mon Apr  4 01:36:18 2005
Return-Path: <amanda>
Received: (from amanda@localhost)
        by localhost (8.13.1/8.13.1/Submit) id j346aII0010390
        for amanda; Mon, 4 Apr 2005 01:36:18 -0500
Date: Mon, 4 Apr 2005 01:36:18 -0500
From: Amanda user <amanda>
Message-Id: <200504040636.j346aII0010390@localhost>
To: amanda
Subject: DailySet1 AMANDA MAIL REPORT FOR April 4, 2005

These dumps were to tape Etiqueta.
The next tape Amanda expects to use is: Etiqueta.

FAILURE AND STRANGE DUMP SUMMARY:
  driver: FATAL exec /usr/local/libexec/dumper (dumper0): Permission denied
  driver: FATAL exec /usr/local/libexec/dumper (dumper1): Permission denied
  driver: FATAL exec /usr/local/libexec/dumper (dumper2): Permission denied
  driver: FATAL exec /usr/local/libexec/dumper (dumper3): Permission denied
  localhost  /Documentos RESULTS MISSING


STATISTICS:
                          Total       Full      Daily
                        --------   --------   --------
Estimate Time (hrs:min)    0:00
Run Time (hrs:min)         0:00
Dump Time (hrs:min)        0:00       0:00       0:00
Output Size (meg)           0.0        0.0        0.0
Original Size (meg)         0.0        0.0        0.0
Avg Compressed Size (%)     --         --         -- 
Filesystems Dumped            0          0          0
Avg Dump Rate (k/s)         --         --         -- 

Tape Time (hrs:min)        0:00       0:00       0:00
Tape Size (meg)             0.0        0.0        0.0
Tape Used (%)               0.0        0.0        0.0
Filesystems Taped             0          0          0
Avg Tp Write Rate (k/s)     --         --         -- 

USAGE BY TAPE:
  Label          Time      Size      %    Nb
  Etiqueta       0:00       0.0    0.0     0


NOTES:
  driver: WARNING: got empty schedule from planner
  driver: dumper0 exited with code 1
  driver: dumper1 exited with code 1
  driver: dumper2 exited with code 1
  driver: dumper3 exited with code 1
  taper: tape Etiqueta kb 0 fm 0 [OK]


DUMP SUMMARY:
                                     DUMPER STATS            TAPER STATS 
HOSTNAME     DISK        L ORIG-KB OUT-KB COMP% MMM:SS  KB/s MMM:SS  KB/s
-------------------------- --------------------------------- ------------
localhost    /Documentos   MISSING --------------------------------------

(brought to you by Amanda version 2.4.4)

It seems that amanda attemps to do the backup but not succesfully.
What could I do for solve this problem

PS:: I attach my conf files

amanda.conf
Description: Binary data

changer~
Description: Binary data

disklist
Description: Binary data

tapelist
Description: Binary data