Archives June 2012

Forcing sendmail to use a different port for outgoing mail

Attention: This content is 9 years old. Please keep its age in mind while reading as its contents may now be outdated or inaccurate.

In the world of Linux (specifically CentOS 5 in this case) sendmail is a very useful utility.  It is what allows linux to send email to regular ole mail servers.  But, if you’re reading this, you likely know that.

Typically sendmail uses standard SMTP port 25 to do its business.  In most cases, this works fine as is, but more and more now I am seeing ISP’s block port 25 and leave the customer with no recourse (coughAT&Tcough).  This makes it particularly difficult for sendmail to do its thing since it is supposed to work on port 25.

The simplest solution is to reconfigure sendmail to send out on a port other than 25.  The only catch-22 here is that the mail server must accept mail on that port as well.  Now, I’ve already set that up using iptables with a simple REDIRECT function and tested to make sure my CentOS box can communicate to it on that port using telnet, so I’m not going to get in to that, as anyone can forward a port).

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Microsoft Surface Tablet

Attention: This content is 9 years old. Please keep its age in mind while reading as its contents may now be outdated or inaccurate.

Microsoft hyped the hell out of their conference today, and while I was initially uninterested, I must say they have my interest now.  Microsoft has unveiled a Windows RT and Windows Pro tablet, called Microsoft Surface.  I’m not too interested in the RT (unless the price is right), but having full blown Windows Pro in a tablet form, packing Ivy Bridge… now THAT is something to be excited about.  I had recently been eyeing HP’s new Spectre XT Ultrabook, but with the news of the Microsoft Surface, I’m going to put those plans on hold until pricing details are announced on the Ivy Bridge surface.  A full blown Windows machine in Tablet form; two words… YES PLEASE!

I don’t have much else to say, but I wanted to express my excitement for what looks like could be a very powerful Tablet.