On 2/04/2017, at 2:07 PM, Nathan Ward <nznog@daork.net> wrote:

My recommendation if you��re building a mail product with the option for forwarding, is to:
1) Rewrite envelope recipient (obviously)

This was done as soon as I was made aware of the SRS stuff for Postfix and to date seems to have ��fixed�� the issue for us. I am still of the opinion that SPF is broken but seem to be fairly alone holding that opinion. I suppose if I had encountered issues with relaying earlier I might have become aware of SRS sooner but as I hadn��t I didn��t. Old story that one doesn��t know what one doesn��t know.

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