User is not authenticated in the case the password
starts with a digit.
Cause: omail.pl, line 702
my $command = 'echo -e "'. $domainname .'\000'.
$username .'\000'. $password .'\000" | ' .$vauthenticate;
Part of the user's password is appended to \000
sequence and treated as a special character.
Possible workaround: use another way to feed vmailmgr's