Calyptix, IP blocks, and SMTP servers

Calyptix Access Enforcer firewalls are great.  I’m writing this post from behind our AE1000 right now.  I’m a big fan of theirs and intend to deploy many more at our customer sites as we refresh their existing firewalls and servers.  That said, there is a bit of an issue with the SMTP aliasing right now.  If you are using a single IP, or have it behind another NAT device (normally a DSL or cable broadband endpoint) then you are okay.  But if you have a block of IPs configured in the Calyptix be careful.  If you have x.x.x.21 as the … Continue reading Calyptix, IP blocks, and SMTP servers

Does Doyenz have their head in the clouds you ask?

“Suspended high among the pastel clouds of Bespin, held aloft by huge repulsorlifts built into its curved frame, is a floating metropolis of sophisticated beauty and political freedom. Cloud City exists not only as a mining colony, extracting valuable Tibanna gas from the depths of the giant planet, but also as a sanctuary for those trying to escape the turmoil gripping the galaxy.” Oh, sorry, wrong cloud.  😉 Ran across a post regarding Doyenz today by Joe Panettieri over at MSPmentor, Will Small Business Server Move Into the Clouds?  I do not work for Doyenz, have not signed a partner agreement with … Continue reading Does Doyenz have their head in the clouds you ask?

Have a Calyptix and Microsoft Updates are failing?

Setting up a new Windows 2008 x64 Server and loading updates on a customer’s Vista notebook.  Having updates fail on the server with an 802002b error stating “Windows Update encountered an unknown error” on the 2008 box.  I have also been having an IE 7 update failing consistently on our SBS 2003 box.  Decided to try turning off the Web monitoring/filtering our office’s Calyptix AE1000.  All updates completed without any trouble.  I like the Calyptix, but if you are running into similar errors, either on Calyptix, or other firewalls for that matter, try turning off the monitoring / outbound filtering.

Do not install IPv6 on your SBS 2003 box

I owe the .NET team an apology for blaming them as the original cause of the problems described in this post.  The pro and con of blog posting is that we can fire off a post and later find out there was a different cause for the effect we were hit with.  So sorry guys and gals for coming down on you so hard.  Figured with the SBS 2008 issues we’ve been seeing after 3.5 SP1 that they were spilling over to SBS 2003 as well. – Steve This post was originally called – .NET Framework 3.5 Service Pack 1 … Continue reading Do not install IPv6 on your SBS 2003 box