What Grey Listing Looks Like

In week 30, on a Friday morning, we applied something called Grey Listing. I told you that about a week’s worth of information was needed to analyse the underlying statistics on a per-domain, per-sender basis — but least I can do is give you a sense of what the statistics are. This will consist of… Continue reading What Grey Listing Looks Like

The 3rd Pillar to Save Your Ass

A controversial topic, to say the least, is what happens when you double-click a message in a Roundcube messages listing, while also having enabled the preview pane. Two things to consider: A regular way to use Roundcube is with a preview pane, A regular way to give reading a message more vertical real estate is… Continue reading The 3rd Pillar to Save Your Ass

Kolab Now: Grey Listing Applied

Aside from other anti-spam measures, we have applied a concept known as grey listing. Here’s a summary of how grey listing works: When an email delivery attempt is made, we know the sending server’s IP address, the sender address, and the recipient address. If this is a previously unseen combination of facts, the delivery attempt… Continue reading Kolab Now: Grey Listing Applied