I have encountered this problem on my own personal mail server only once a while. It’s ratehr rare, and happends only when sending mail to some specific domains. My first notion was based on the claim that if it works for anywhere except for these one or two domains, the problem is with these one…
First and foremost – the Ontap simulator, a great tool which surely can assist in learning NetApp interface and utilization, lacks in performance. It has some built-in limitations – No FCP, no disks (virtual disks) larger than 1GB (per my trial-and-error. I might find out I was wrong somehow, and put in on this website),…
I’ve had the pleasure of playing with Ontap Simulator. This is a marvelous tool, designed to simulate a real NetApp appliance, in an easy and affordable manner. I’ve noticed a link to this simulator, in Oracle’s web site. I’m posting it here so you’ll get to know what I’m talking about. I’m playing with it…
It’s been a while since I’ve dived into Cacti, but back then I got frustrated at the lack of ability to monitor Postfix mail transportation and Amavisd filtering. I wanted it both for the practical results (know when you have an exceeding mail load, know when you have a spam attack…), and both for the…
We’ve had some issues with electricity going down on specific rack closets. We have a single 16A fuse for each closet. On some, the ones containing older Sun servers, about 12 servers were able to go into a rack closet, so we’ve had no issues with power consumptions. However, on a rack closet holding many…
I’m not going to disclose now the method to do so, but I want to show off, so here’s a (real) screen-shot taken from my Cisco Fabric Manager. I have three MDS 9212, two Brocade SilkWorm 2800 and one Brocade SilkWorm 2400. All later three are old and slow, which is why I’ve used the…
