Hello,
I have a problem with setting up our mailserver for selective relaying.
Here is what I have and what I need:
We are an ISP with hundreds of domains and users and also offer dialin.
So:
- all local users must send and receive emails
- we have many users, who dialin through other ISP's (e.g. aol) but have
a POP3-Account
here. These users should also send (relay) through our mailserver.
This is generally no problem with the avaible tools -
but it`s too much work and not secure enough to allow relaying only IP's
(dynamic ip-addresses, many ISP's, many networks..)
I think that the following concept would do a good job:
1.) relay on IP-Base, with some (larger) networks
2.) allow relay if sender has a address within our domainpool and IP in
IP-List
3.) accept messages from everywhere (ok .. excluding some baddomins ,
ORBS...) for recipent-addresses in our pool.
1.) and 3.) are "simple", but how can I do 2.) ????
Can you help me or do you have an idee how I can do this?
greetings
M. Junk
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i-dea: Der Internetprovider in Neukirchen-Vluyn
i-dea
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