There are several things you can do to find the source of the problem. First, you can set Debug option when creating $smtp object: 

$smtp = Net::SMTP->new('**.*.*.*', Debug => 1);

[download]
It will provide you with some debugging output about process.

Second, you may check values returned by the Net::SMTP methods. If method failed, it would return false.

And finally, I would recommend you to use some higher-level module for sending email: MIME::Lite, Email::Send

In reply to Re: net::SMTP - multiple emails by zwon
in thread net::SMTP - multiple emails by whittick

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