shadowpuppet has asked for the wisdom of the Perl Monks concerning the following question:

I'm not a spammer, but I do have code that sends alot of emails to registered users. We're migrating this code to linux, and I noticed that submission to postfix using Net::SMTP is fairly slow, about 50,000 per hour, whereas on slowlaris, we were getting about 250,000 per hour. In every other way, the linux box performs much faster. Anyone noticed Net::SMTP being slow on linux?