You're being blocked because any mail leaving Comcast's IP spaces is expected to come from Comcast's mailservers only.
Configure your mailserver with a "smarthost" option, have it deliver using Authenticated SMTP (with your Comcast account's username and password hardcoded, yes) over SSL on 465, or if you can't do SSL, use 587.
Source: Am currently running Postfix on Comcast successfully delivering to Yahoo Mail with no spamfolder problem via this method. (Am using SPF, no DomainKeys yet.)
More from Comcast on this: http://corporate.comcast.com/c...
The Network Diagnostic Test was able to see performance problems on my cablemodem connection that Ookla's speedtests did not.
Unfortunately, the number of ridiculous hoops you need to go through to let an unsigned Java applet run an arbitrary network I/O makes it much less useful.
From the Matchstick SDK download agreement: (abridged)
4. Restrictions. You agree not to exploit
... content provided to you as a Registered Matchstick Developer, in any unauthorized way ... other than for authorized purposes. Copyright and other intellectual property laws protect ... content provided to you, and you agree to abide by and maintain all notices, license information, and restrictions contained therein. You may not decompile, reverse engineer, disassemble, attempt to derive the source code of any software or software components of the Matchstick software including the Matchstick SDK software.
"Open Source Hardware" ?
You keep using that word. I do not think it means what you think it means. — Inigo Montoya
The Rockchip 3066 appears to use ARM's proprietary Mali T-series graphics. No, thanks.
Quote from the dev lead on the Mali graphics:
"I really do understand your frustration and I'm sorry that this makes life harder for you and similar developers. We are genuinely not against Open Source, as I hope I've tried to explain. I myself spent a long time working on the Linux kernel in the past and I wish I could give you a simple answer. Unfortunately, it is a genuinely complex problem, with a lot of trade-offs and judgements to be made as well as economic and legal issues. Ultimately I cannot easily reduce this to an answer here, and probably not to one that will satisfy you. Rest assured that you are not being ignored. However, as a relatively small company with a business model that is Partner driven, the resources that we have, need to be applied to projects in ways that meet Partner requirements."
—(2014-09) ARM Still Not Doing Open Drivers