Per-domain/per-account settings for Plesk 9’s greylisting
Plesk 9 introduced the very useful feature of greylisting for the Postfix SMTP server (and presumably the QMail one as well, but I only use Postfix as QMail gives me a headache!). Greylisting basically sends a “resource temporarily unavailable, please try again later” message whenever someone connects and tries to deliver an e-mail. For legitimate SMTP servers, this isn’t a...