[PLUTO-help] warning: pipe_command_read

[Elena Camerin]

Buongiorno a tutti,
mi presento, leggo da un po' ma scrivo per la prima volta a questa 
lista, sono una tecnica e cerco di imparare a gestire un server linux 
con debian installata,
ovviamente ho molte lacune riguardo linux ma ci devo lavorare e mi piace.

Sul server linux debian con postfix ho installato spamassassin,
fa lavorare parecchio la macchina e nei file log si presentano 
moltissimi warning che riporto

Nov 22 08:03:48 www postfix/local[9263]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:04:58 www postfix/local[10591]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:13:45 www postfix/local[10583]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:16:38 www postfix/local[10185]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:16:39 www postfix/local[9257]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:16:49 www postfix/local[10186]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:21:39 www postfix/local[10211]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:28:05 www postfix/local[17365]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:29:59 www postfix/local[17384]: warning: pipe_command_read: read time limit exceeded
Nov 22 08:38:19 www postfix/local[9537]: warning: pipe_command_read: read time limit exceeded

Qualcuno mi sa dire cosa significano e come eventualmente intervenire?

Grazie,
Elena