I have an ASP application using Perl modules and its working fine for
years. But suddenly yesterday we face problems though inconsistently
and get the following error message:

Software error:
Bad file descriptor at D:/Perl/site/lib/Mail/Mailer.pm line 151.
For help, please send mail to this site's webmaster, giving this error
message and the time and date of the error.

Appreciate your help to resolve this issue.

Thanks and Regards,
M. Menakai.