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Comcast plan to stop Spam

Comcast’s users have been one of the largest sources of U.S. originated spam. Other large ISPs (Cox and AOL) have taken to blocking end user access to any mail server other than their own on port 25....

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Comcast’s smtp disconnects ineffective

Back on May 24th I wrote about Comcasts plan to combat spam originating on its network. Comcast reported that they planned to terminate the ability of some users to send mail out via port 25. Unlike...

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CBL List (partially) Blocks MessageLabs

Looks like the shoe is on the other foot. Last week I was chortling that MessageLabs was tar pitting Google in an automatic response to gmail sending out so much spam. Now some of MessageLabs IPs have...

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Comcastic SMTP Servers

One of our users complained that they did not receive a highly critical piece of email sent from a Comcast user. Other addresses on the recipient list at our company did receive the message. Checking...

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Comcast to warn of infected machines

This week numerous sources reported on news that Comcast will deliver popups to alert customers with infected machines. I agree with Phil Lin, marketing director at network security firm FireEye Inc as...

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