[Dshield] ISP's blocking dynamic IP address mail servers

Laura Vance vancel at winfreeacademy.com
Thu Apr 22 15:35:19 GMT 2004

This is what I ended up doing last night when I got home.  I thought I 
replied to another email where it was suggested, but I guess I didn't.

It also seems like from a couple of the replies, that some are a touch 
hostile to me even asking if it was possible.  My intent was not to 
irritate anyone, and I apologize if I did.  I was mainly trying to find 
out if it was possible.  Since it is obviously not possible, I set up 
the relayhost setting in my mail server to hit my ISP's mail server, and 
all is well.

The next step would be for ISP's to block all inbound traffic on port 25 
to their clients.  I hope this doesn't happen, but if it does, I will 
have to completely remove my home mail server.  Even though I won't like 
it, I will have no choice at that point, as I have no choice now.

Mark Tombaugh wrote:

>On Wednesday 21 April 2004 11:44 am, Laura Vance wrote:
>>Is there any way to get ISP's (prodigy and sbcglobal
>>(I believe they're the same company now)) to implement a better way of
>>spam blocking than just the wholesale blacklist of IPs simply because
>>they are dynamic?  
>Why not config your server to use a relay with proper revdns on a static IP? 
>Seems like this would be easier than asking several companies, who are 
>honestly trying to control UCE, to change their policies so that you can run 
>a server from home. Or, pay for a static IP and revdns. Problem solved.
Laura Vance
Systems Engineer
Winfree Academy Charter Schools, Data-Business Office
1711 W. Irving Blvd. Ste 310
Irving, Tx  75061
Web: www.winfreeacademy.com

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