I've run a mail server on comcast for about 5 years with no problems 
with blockage.  I do have to use them as a relay to get around the 
problem of mail rejection from a source ip being in a dynamic range.

~jh

On 12/29/2010 08:48 PM, Ryan Coleman wrote:
> Wes,
>
> If they are not doing it right away you will expect to have 25 closed eventually.
>
> Comcast ONLY blocked port 25 on me, after nearly four years of hosting a webserver on my residential line.
>
> --
> Ryan
>
> On Dec 29, 2010, at 8:33 PM, wes smith wrote:
>
>    
>> What ports do they exactly block.  I want to setup a mail server at home, and at least keep ssl default for apache
>>      
>
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