From: Milosz SZOT (miloszadoc.fr)
Date: Mon Oct 01 2007 - 04:27:57 CDT

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Thanks for your answer,

> Add the external IP of the Exchange server to your SPF record
I'll add the exchange server in the spf for every domain i control, today

> FWIW, I agree your recipient is misconfigured. I've seen similar
reject messages that were equally incorrect before, so I'd be curious to
know what implementation it is that gets this wrong.

I guess i won't know what implementation is used, because it's a
customer, so i don't imagine me giving a phone to them to tell them
their mail filters are faulty, it's a big customer, and it's a somewhat
large company =/

I have one more question :
if i delete my exchange server from the spf so everything is relayed in
and out by the 2 postfixes, is there any chance to be considered as
spammer, for mail servers not using spf ?
I mean misconfigured old mail servers checking MX records, and looking
in the headers, and maybe checking my exchange server because it is the
original sender in my headers ?

It's my first "true" mail server and i don't want to take any risks

Thanks anyway !

Milosz SZOT

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