Hi, I have only one public ip address and one domain associated with it.
I run a dns. With dynamic updates some hosts send me their address and after
a few they are reachable at name.my.domain
My question:
How do I set postfix to do mail relay for those hosts? I can't do reverse
lookups on the names, and I read on documentation that relaying based only on
sender address it's not good.
Can I do it or not?

Thanks in advance,

        gianpaolo racca
        gianpaolopreciso.net

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