I once ran a grep on my personal postfix mailserver's logs. Turns out I would constantly 550 bounce spam for email addresses that didn't exist for my domains. T

I once ran a grep on my personal postfix mailserver's logs. Turns out I would constantly 550 bounce spam for email addresses that didn't exist for my domains. Thousands of connections a day, all looking for adam@, barry@, charles@... and down an alphabetical list. That, on top of the relay requests, would fill up a single day's logfile 5 times faster than authorized traffic.