>In other words, if everyone used the same software to send emails, then anti-spam systems will have to use other metrics to blacklist people. Right, and the "

>In other words, if everyone used the same software to send emails, then anti-spam systems will have to use other metrics to blacklist people. Right, and the "other metrics" is what spam heuristics already use now. In other words, you replied to this author's problem with "self-updating software" but software cannot solve his outgoing email getting rejected/spamholed. It's those "other metrics" that made him give up running his mailserver from home.