spf-discuss
[Top] [All Lists]

Re: How to define SPF for a domain with 115 distinct IP Addresses

2004-09-25 07:04:11
At 25/09/04 13:23 (), you wrote:
Devendra wrote:

> We have around 115 IP Address for our different Servers. A few of the IP
> Addresses are in consecutive ranges but mostly are from separate pool.

Do it like this:

@               TXT     "v=spf1 exists:%{ir}.spf.example.com -all"
1.1.168.192.spf A       127.0.0.2
4.3.168.192.spf A       127.0.0.2
5.4.168.192.spf A       127.0.0.2
2.9.168.192.spf A       127.0.0.2
...

Roger

Thanks Roger,

I also found a thread from the archives:
http://archives.listbox.com/spf-discuss(_at_)v2(_dot_)listbox(_dot_)com/200406/1001.html

which has detailed a the methods for such scenario.

But, the comment "The down side is that it doesn't use the DNS cache as well" had made me worry about the kind of load it would put on my DNS Server.

Expert Comments Please !

Devendra Singh