Aaah - I think I fought MIME::Lite on that front at one time. If you are on Windows, MIME::Lite does not always know to binmode the file used for an attachment. For .xls files, I now manually patch the mime type to application/vnd.ms-excel, which seems to do what I need, but I have old and disabled code that forced a binary attachment:

    $msg->attach(  
                   Type        => $type,
                   Disposition => 'attachment',
                   Path        => $filename,
                   Filename    => basename($filename),
                   Binmode     => 1,
    );

[download]

If you are not on Windows, or that does not fix the problem, are you sure that the files to be attached have been written completely and their filehandles closed?

In reply to Re^5: SMTP auth() command not supported on smtp.live.com by Corion
in thread SMTP auth() command not supported on smtp.live.com by lighterjoul

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