Hello Volker,
What you need to do is tell other mail servers that they should accept mail
from server2 on behalf of server1.
If server1 is server1.yourdomain.comand server2 is server2.anotherdomain.com
then you should list anotherdomain.com in your spf. If server2 doesn't have a
domain name, you can add its IP.If it's already listed in your MX for
yourdomain.com, then you don't need to change anything.If you have an A record
for yourdomain.com that points server2's IP (shouldn't be), you need to add A
to your spf string (v=spf1 mx a ~all).
-- Yassine.
On Tuesday, May 9, 2017 1:24 PM, Volker Cordes <i...@freeline-edv.de> wrote:
Hello,
I know this topic is not really postfix related but advice would
nevertheless be appreciated.
I'm adding a second mail server to my setup, my domains are
spf-protected by this simple entry:
v=spf1 mx -all
If I add second DNS A entry for my MX server will this still work or do
I have to list ips individually? Or should I create multiple MX entries?
The reason I don't want to do that in the first place is that there are
a lot of domains and I'd have to set the entries manually.
Thanks
Volker
