> On Feb 3, 2015, at 7:11 PM, Viktor Dukhovni <[email protected]> 
> wrote:
> 
> Yep, you're mistaken.  This has nothing to do with SASL.  What is
> failing is sender address verification (SAV).
> 
>    http://www.postfix.org/ADDRESS_VERIFICATION_README.html

While it was address verification, it turns out it wasn’t from the local 
postfix, but of the hosting company of our primary email server. Once I added 
the appropriate DNS entries the problem went away. Thanks for your help in this 
as well as the really helpful pointer to the postfix debug methods.

---
Jim McCorison
Orcas Island, WA

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