Yes in most markets. Here are a couple of discussions on the subject.
blocked port 25
Other potentially blocked ports include:
The crop above was taken from this pdf file   BlockedPorts.zip 132,087 bytes
(BlockedPorts.pdf) posted here by Tech5782  the pdf has additional information.
Edit 1/14/05 to add:
chtres posted the following here »Re: [Other] Remote Assistance blocked?.
For Great Lakes Division (MN, MO, IL, IN, NE)
Charter blocks:
21
23
25
80
110
119
143
1080
8080
These are blocked to prevent people from running servers on common ports. Any port not listed is open.
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by nozero
last modified: 2006-01-14 19:10:56 |
