From: Scott Kitterman (postfixkitterman.com)
Date: Thu Sep 27 2007 - 08:07:45 CDT

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On Thursday 27 September 2007 06:00, Milosz SZOT wrote:

> As far as I see, my logs doesn’t report any misconfiguration, if not
> conceptual
>
> If it appears that my recipient’s mail servers are misconfigured, I’ll
> have 3 choices :
>
> - contact the administrator and report him the problem
>
> - configure the relays so Postfix doesn’t insert headers related to LAN,
> from where comes outbound mail
>
> - leave exchange.mydomain.com in the MX record (really … it’s not an
> option lol)

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.

Option 4:

Add the external IP of the Exchange server to your SPF record:

ip4:a.b.c.d

"v=spf1 mx ip4:a.b.c.d a:linmutprd1.nextedia.com a:www.e-ventory.fr
a:cache.adoc.fr -all"

Scott K

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