Comcast to Use Spamhaus

said by kapil:

I've been doing that for years...but there is something to be said about Gmail's fabulous AJAX interface, free POP, and plenty of storage/archive space. I finally switched over to hosted gmail and turned off my own mail server.

said by technick:

Not sure if anyone ever thought about this or not. There's tons of comcast ip addresses that are listed on RBL's including Spamhaus. I hope Comcast takes steps to get ip addresses un-blackholed.

said by NormanS:

99% of those IP addresses are dynamically assigned residential accounts, a large number of which host compromised computers running spamming proxies. Until Comcast implements outbound port 25 blocking across the board, I hope those IP addresses remain listed. Otherwise I'll have to create my own, local blacklist to cover them.

said by sweintz:

There are plenty of RBL's that specifically list dynamic IP's. None have 100% accurate, but are close enough.

The sorbs DUL comes to mind. I think NJABL has a dynamic list as well.

said by ThrowDemsOut:

The problem here is that Spamhaus has a nasty reputation for blocking whole ranges of addresses instead of just the sources of SPAM. It will surely cut down on SPAM. But it will also block legitimate emails at a higher rate than other SPAM filtering solutions. I fear that Comcast users, and that includes me, will start missing some emails that they really want.

said by Combat Chuck:

how is an inbound mail filter going to cause comcast to deal with infected boxes?

said by moonpuppy:

If Comcast is blocked from other ISPs by the same service they signed up for, then they will have issues. Imagine having your domain on a block list administered by the same service you get that block list from. How do you block yourself?

Now, if internal Comcast member to member mail is also screened, that could be interesting too.

said by moonpuppy:

If Comcast is blocked from other ISPs by the same service they signed up for, then they will have issues.

said by ThrowDemsOut:

The problem here is that Spamhaus has a nasty reputation for blocking whole ranges of addresses instead of just the sources of SPAM. It will surely cut down on SPAM. But it will also block legitimate emails at a higher rate than other SPAM filtering solutions. I fear that Comcast users, and that includes me, will start missing some emails that they really want.