You can also go to
https://www.grc.com/x/ne.dll?bh0bkyd2 and then click
on proceed and then select common ports or all service ports.
The site will do a scan and let you know the results.
Jim
On Tue, 2003-11-25 at 11:08, Alan Dayley wrote:
> I have setup my at home email server for external access on an odd, high
> port number. It has been working well with dynamic DNS from my domain
> provider and everything. Then, it suddenly stopped answering and I can
> get into it, even with the specific IP.
>
> A brief check of all configuration and operation this morning showed
> that all is supposedly well on my end. Is there a way I can tell if my
> ISP is suddenly blocking the ports?
>
> Alan
>
>
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