Some marketers hate the idea that they need permission to enter your inbox. They don't say it in so many words. They talk about "implied permission", and their responsibility as marketers to anticipate consumer wants and deliver relevant emails to them. And they think thats what consumers want from them.
This tutorial demonstrates how to create a secure Receive Connector on an Exchange Server 2010 Hub Transport server to allow other servers or devices to relay mail.
In some scenarios a mailbox user sending emails to a mail-enabled Public Folder may receive an undeliverable message with a reason of "MapiExceptionNotAuthorized".
SecurityDistro.com has published my tutorial on how to use GFI LANGuard to find and resolve security vulnerabilities on your network.
“The CA system is broken, but it works because broken systems tend to be better for society, which needs fluidity in the face of complicated social constructs,” Schneier said. “Systems that are broken but work are very common in the real world: Front door locks are surprisingly pickable. Think of faxed signatures, for example. It’s […]
To quote Bruce Schneier, “well-designed security systems fail gracefully”. This means for example when the ISA firewall service fails it closes off network connectivity entirely (ie retains security) instead of opening your entire network up (ie decreases security). This week SonicWALL’s license servers suffered a glitch rendering thousands of customer units useless and leaving the […]
Microsoft provides two useful resources for MOSS security: Security for Office SharePoint Server 2007 (downloadable book) Office SharePoint Server Security Account Requirements (worksheet) Link: John Westworth’s blog on Technet
You have to ask: is there malware on my system? You can be 100 per cent certain there is no malware that you can detect, but less than 100 per cent certain that there is no malware at all. Now, ladies and gentlemen, isn’t this true of every computer we already have? There is […]
Microsoft has released their own white paper containing guidance on configuring Exchange 2007 for Address List separation. This is something that was pretty easy in Exchange 2003, but suddenly made a lot more complicated and less obvious in Exchange 2007. A bunch of home brew solutions came about some time after Exchange 2007 was released […]
Here is the anti-spam configuration on an Exchange Server 2007 RTM server: [PS] C:\>Get-AntispamUpdates UpdateMode : Automatic LatestContentFilterVersion : 3.3.4604.600 SpamSignatureUpdatesEnabled : True LatestSpamSignatureVersion : 3.3.4604.600 IPReputationUpdatesEnabled : True LatestIPReputationVersion : 3.3.4604.001 MicrosoftUpdate : NotConfigured And here is the same Exchange Server 2007 server immediately after upgrading to Service Pack 1: [PS] C:\>Get-AntispamUpdates UpdateMode : […]
In prior versions of Exchange an organisation that wished to restrict who could send outbound internet emails could apply the restriction on an SMTP connector. In this example emails sent to the * address space are rejected by default unless sent by a group listed in the “Accept messages from:” list, for example a group […]
Jeff Jones posted a blog entry to celebrate Red Hat fixing their 1000th unique security vulnerability. He also draws attention to a Red Hat post on their “Truth Happens” blog back in August, which itself quotes a post on Lxer.com. Jeff posts quarterly statistics on his blog that show how many vulnerabilities have been patched for various […]
