(RE) This file is write, but is not full (cut after 510 lignes) ... "mailgraph.pl"
"/usr/share/artica-postfix/bin/install/rrd/mailgraph.pl" it's necessarry to have (for the moment) an old similar file ... and just after when Artica is run,
it's necessary to copy this good file "usr/share/artica-postfix/bin/install/rrd/mailgraph.pl" ....
