Postfix Problem [Was "Re: anybody have experience with this outfit?"]

[Ken Moffat]

Kurt Wall wrote:

>On Mon, Jan 10, 2005 at 05:55:05PM -0800, Ken Moffat took 30 lines to write:
>  
>
>>dep wrote:
>>    
>>
>
>[DSL rocks]
>
>  
>
>>I've been trying to set up remote smtp relaying using postfix and imap, 
>>but no luck. Relaying denied by my local postfix install. Works only 
>>from inside my firewall, not from the web. (not yet.)
>>    
>>
>
>You need to add the host(s) allowed to relay to relay_domains (which
>defaults to $mydestination).
>
>Kurt
>  
>

So this would allow sending from specific domains, but what if the 
domain is "comcast.net" or some such isp. My son has a comcast 
connection, but no email, using his yahoo mail address, but wants to be 
available on my domain. I don't really want to open up comcast.net. I 
wonder if they have a fixed ip address or if it changes.

thanks for the answer.


-- 
ken