From: Osmany Goderich (administradorcha.jovenclub.cu)
Date: Thu Nov 01 2007 - 12:24:22 CDT

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> I've just configured my postfix to request smtp authentication

How? Show all related settings.

> but now I
> find that one of my clients has a mail server(postfix with fetchmail)
that
> is in charge of downloading all their mail to their server so that they
can
> use mail clients(Outlook) in their small LAN. Of course this server relays
> all the outgoing mail to my server and here comes the problem. What does
he
> need to do to meet my smtp authentication request? What does he has to add
> in his postfix configuration in order to do an authenticated smtp relay?

If this server has a static IP, you could add it to mynetworks, or use TLS
with client certs (issued by your private-label CA, or via fingerprints). Or

    http://www.postfix.org/SASL_README.html#client_sasl

--
        Viktor.

I've already sent the configurations in a message before with the subject
'Postfix restrictions'. I thought about what you said and yes, this serve
has static IP, but I really wouldn't like to compromise my security just for
this client to get his messages relayed. Can't he do anything in his server
so that it authenticates when it relays to me? I really think there should
be another way to solve this.

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