"unable to establish SMTP connection

Trace begun at C:\Dwimperl\perl\site\lib\Email\Sender\Transport\SMTP.pm line 95
Email::Sender::Transport::SMTP::_throw('Email::Sender::Transport::SMTP=HASH(0x2cf10dc)', 'unable to establish SMTP connection') called at C:\Dwimperl\perl\site\lib\Email\Sender\Transport\SMTP.pm line
62
Email::Sender::Transport::SMTP::_smtp_client('Email::Sender::Transport::SMTP=HASH(0x2cf10dc)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Transport\SMTP.pm line 104
Email::Sender::Transport::SMTP::send_email('Email::Sender::Transport::SMTP=HASH(0x2cf10dc)', 'Email::Abstract=ARRAY(0x41fd64)', 'HASH(0x41fd74)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Role\
CommonSending.pm line 27
Email::Sender::Role::CommonSending::__ANON__ at C:\Dwimperl\perl\site\lib\Try\Tiny.pm line 76
eval {...} at C:\Dwimperl\perl\site\lib\Try\Tiny.pm line 67
Try::Tiny::try('CODE(0x2e37d44)', 'Try::Tiny::Catch=REF(0x2cce4ec)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Role\CommonSending.pm line 37
Email::Sender::Role::CommonSending::send('Email::Sender::Transport::SMTP=HASH(0x2cf10dc)', 'Email::Abstract=ARRAY(0x41fd64)', 'HASH(0x2e37f44)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Simple
.pm line 110
Email::Sender::Simple::send_email('Email::Sender::Simple', 'Email::Abstract=ARRAY(0x41fd64)', 'HASH(0x41fe54)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Role\CommonSending.pm line 27
Email::Sender::Role::CommonSending::__ANON__ at C:\Dwimperl\perl\site\lib\Try\Tiny.pm line 76
eval {...} at C:\Dwimperl\perl\site\lib\Try\Tiny.pm line 67
Try::Tiny::try('CODE(0x41fde4)', 'Try::Tiny::Catch=REF(0x2b8b6cc)') called at C:\Dwimperl\perl\site\lib\Email\Sender\Role\CommonSending.pm line 37
Email::Sender::Role::CommonSending::send('Email::Sender::Simple', 'Email::MIME=HASH(0x2ceab2c)') called at C:\Dwimperl\perl\site\lib\Sub\Exporter\Util.pm line 69
Sub::Exporter::Util::__ANON__('Email::MIME=HASH(0x2ceab2c)') called at script.pl line 21
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