On 10/11/2017 12:12 PM, Mark Sapiro wrote:
solution 2). Your mail relaying process can rewrite the envelope sender to your domain, e.g., [email protected] or some other appropriate @myserver.com address. This will break mailman's automated bounce processing for mail from [email protected] that is relayed by you, but if you can verify the deliverability of that mail before relaying it and if it's not deliverable, reject it before rewriting the envelope sender, that won't be an issue.
Would something like configuring the MTA to use Sender Rewrite Scheme help avoid this issue?
SRS would mean that the MTA would rewrite the SMTP envelope from address to be a local domain that is permitted by SPF. SRS would also decode any bounces and send the original address into Mailman. - I think.
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