Spammers take root on customer machines, compromise email accounts and WordPress plugins, and use sophisticated techniques at obfuscating their identity in order secure hosting resources. Fortunately, it’s possible to filter outgoing email transparently using software. Done properly, transparent SMTP filtering is scalable, lawful, and effective.
Web hosting providers can find it challenging to ensure a clean IP reputation. Unfortunately, the internet itself is not free of misinformation about outgoing email filtering. In this blog post we challenge three suggested alternative methods for cleaning up your IP reputation:Blocking port 25: Web hosting clients should not be restricted from using a port that is lawful to use (unless you’re spamming, of course). Most providers we talk to would not consider blocking port 25, for fear of losing customers. Still, this option is often promoted as a quick solution to the spam… Read More »