Hi Alessandro, What software do you run on port 25? -- I currently use postfix as my MTA.
I don't know on any third party doing that job. Indeed, for them to send DMARC reports, you'd need to provide them with your authentication results per sending IP number, which is the data contained in DMARC reports. You probably have to delegate email authentication to a third party as well. -- I understand that. Since turning on DMARC reporting, I have received some reports for emails sent to a few servers supporting DMARC reporting but the reports came from Google, Microsoft, Fastmail, etc. I was actually looking to replicate this scenario but have no idea how to. Hi Tobias, What works well for me is rspamd [1], but there is also a tool for postfix (iirc; maybe somebody else can weigh in there). Similarly, there should be something for TLS-RPT. -- Got it. Wanted to avoid a self-managed service. But if any third-party solution does not work, will try to integrate rspamd with Postfix and keep in mind the loop-y behavior. Thanks. On Tue, Nov 29, 2022 at 8:36 AM Tobias Fiebig via mailop <mailop@mailop.org> wrote: > Heho, > As said by Alessandro; You will have to make the tool you are currently > using for validating DKIM/SPF -> DMARC generate and send the reports. > > What works well for me is rspamd [1], but there is also a tool for postfix > (iirc; maybe somebody else can weigh in there). Similarly, there should be > something for TLS-RPT. > > What you should keep in mind when setting this up, though, is that you can > actually run into rather loop-y behavior if you originate your dmarc > reports from a domain that requests reports itself (best practice would be > originating from a subdomain not requesting reports; you could also exclude > originating reports for that domain, at least with rspamd): > - You get a mail > - You sent a report > - Other party gets a mail (the report) > - Other party sends out report (because they got a mail from you) > - You get a mail... > > For my setup, that is something I still plan to fix. :-| > > With best regards, > Tobias > > [1] https://rspamd.com/doc/modules/dmarc.html > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop >
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