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

Kolab Now: Another Round of Updates

This weekend has seen a variety of systems being issued either of, or combination of, the following commands; yum -y update yum –enablerepo=kolab-16-updates-testing -y update puppet agent -t –no-noop reboot rm -f /dev/null; mknod -m 666 /dev/null c 1 3 I don’t expect everyone to know and understand what these pieces mean, so I’ll divide… Continue reading Kolab Now: Another Round of Updates

Kolab Now: Disabled IMAP Proxy

Since last weekend’s upgrade of Kolab Now to Kolab 16, some customers have reported IMAP connection and folder synchronization issues. I have therefore elected to bypass the IMAP proxy used to filter groupware folders, basically returning all IMAP client connections to the same behaviour and connection end-points you were accustomed to before. While our tests… Continue reading Kolab Now: Disabled IMAP Proxy

Re: Product Manager vs. Product Owner

Dear Melissa Perri, I’ve read your article entitled “Product Manager vs. Product Owner” with interest,  and I recommend my readers also browse Melissa’s blog for other interesting articles. However, I would like to take this opportunity to respectfully disagree with some of your article’s implied rhetoric to be entertained and conclusions, and challenge others. In my… Continue reading Re: Product Manager vs. Product Owner

Upgrade of Kolab Now to Kolab 16

This weekend, from Sunday 00:00 UTC to Sunday 04:00 UTC, users and customers of Kolab Now may experience intermittent availability of various services. While our data center’s network provider will perform standard network maintenance, so will our staff upgrade our software and databases, and reconfigure infrastructure to get you to the next generation of collaboration… Continue reading Upgrade of Kolab Now to Kolab 16