ISP port blocking practice

Fri Sep 3 21:07:49 UTC 2010

On Sep 3, 2010, at 8:02 PM, Patrick W. Gilmore wrote:

> Could you point to more than one instance?  I've not yet found one.

I've yet to run across this, either, FWIW, except on extremely restrictive special-purpose endpoint networks.  Doesn't mean that it doesn't happen, but it doesn't seem to be nearly as prevalent as TCP/25 blockage on general SP access networks.

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