[Mailman-Users] DKIM signing issue - relaying mailman e-mails from third party sources

[Mark Sapiro]

On 10/12/2017 02:15 PM, Grant Taylor via Mailman-Users wrote:
> 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., campaign at myserver.com or some other
>> appropriate @myserver.com address. This will break mailman's automated
>> bounce processing for mail from mailman-bounces at external-company.com
>> 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?


Yes. SRS, as I understand it from
<https://en.wikipedia.org/wiki/Sender_Rewriting_Scheme>, would solve the
whole problem.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan